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5538ada6 | 1 | /* CPP Library. |
5e7b4e25 | 2 | Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
745b26b3 | 3 | 1999, 2000, 2001, 2002 Free Software Foundation, Inc. |
5538ada6 ZW |
4 | Contributed by Per Bothner, 1994-95. |
5 | Based on CCCP program by Paul Rubin, June 1986 | |
6 | Adapted to ANSI C, Richard Stallman, Jan 1987 | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU General Public License as published by the | |
10 | Free Software Foundation; either version 2, or (at your option) any | |
11 | later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
21 | ||
5538ada6 ZW |
22 | #include "config.h" |
23 | #include "system.h" | |
6de1e2a9 ZW |
24 | #include "cpplib.h" |
25 | #include "cpphash.h" | |
6de1e2a9 ZW |
26 | #include "prefix.h" |
27 | #include "intl.h" | |
9f8f4efe | 28 | #include "version.h" |
49e6c08e | 29 | #include "mkdeps.h" |
60893f43 | 30 | #include "cppdefault.h" |
0d24f4d1 | 31 | #include "except.h" /* for USING_SJLJ_EXCEPTIONS */ |
6de1e2a9 | 32 | |
4a58aab6 | 33 | /* Predefined symbols, built-in macros, and the default include path. */ |
6de1e2a9 ZW |
34 | |
35 | #ifndef GET_ENV_PATH_LIST | |
36 | #define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0) | |
37 | #endif | |
38 | ||
88ae23e7 ZW |
39 | /* Windows does not natively support inodes, and neither does MSDOS. |
40 | Cygwin's emulation can generate non-unique inodes, so don't use it. | |
ec5c56db | 41 | VMS has non-numeric inodes. */ |
88ae23e7 | 42 | #ifdef VMS |
ca47c89e DR |
43 | # define INO_T_EQ(A, B) (!memcmp (&(A), &(B), sizeof (A))) |
44 | # define INO_T_COPY(DEST, SRC) memcpy(&(DEST), &(SRC), sizeof (SRC)) | |
88ae23e7 | 45 | #else |
3943e756 | 46 | # if (defined _WIN32 && ! defined (_UWIN)) || defined __MSDOS__ |
ca47c89e | 47 | # define INO_T_EQ(A, B) 0 |
3943e756 | 48 | # else |
ca47c89e | 49 | # define INO_T_EQ(A, B) ((A) == (B)) |
3943e756 | 50 | # endif |
ca47c89e | 51 | # define INO_T_COPY(DEST, SRC) (DEST) = (SRC) |
88ae23e7 ZW |
52 | #endif |
53 | ||
4a58aab6 | 54 | /* Internal structures and prototypes. */ |
6de1e2a9 | 55 | |
4a58aab6 NB |
56 | /* A `struct pending_option' remembers one -D, -A, -U, -include, or |
57 | -imacros switch. */ | |
8be1ddca | 58 | typedef void (* cl_directive_handler) PARAMS ((cpp_reader *, const char *)); |
0b22d65c | 59 | struct pending_option |
6de1e2a9 | 60 | { |
0b22d65c | 61 | struct pending_option *next; |
7ceb3598 | 62 | const char *arg; |
40eac643 | 63 | cl_directive_handler handler; |
6de1e2a9 | 64 | }; |
0b22d65c | 65 | |
88ae23e7 | 66 | /* The `pending' structure accumulates all the options that are not |
f5e99456 | 67 | actually processed until we hit cpp_read_main_file. It consists of |
88ae23e7 | 68 | several lists, one for each type of option. We keep both head and |
4a58aab6 | 69 | tail pointers for quick insertion. */ |
88ae23e7 ZW |
70 | struct cpp_pending |
71 | { | |
40eac643 | 72 | struct pending_option *directive_head, *directive_tail; |
88ae23e7 | 73 | |
591e15a1 NB |
74 | struct search_path *quote_head, *quote_tail; |
75 | struct search_path *brack_head, *brack_tail; | |
76 | struct search_path *systm_head, *systm_tail; | |
77 | struct search_path *after_head, *after_tail; | |
88ae23e7 ZW |
78 | |
79 | struct pending_option *imacros_head, *imacros_tail; | |
80 | struct pending_option *include_head, *include_tail; | |
81 | }; | |
82 | ||
0b22d65c ZW |
83 | #ifdef __STDC__ |
84 | #define APPEND(pend, list, elt) \ | |
85 | do { if (!(pend)->list##_head) (pend)->list##_head = (elt); \ | |
86 | else (pend)->list##_tail->next = (elt); \ | |
87 | (pend)->list##_tail = (elt); \ | |
88 | } while (0) | |
89 | #else | |
90 | #define APPEND(pend, list, elt) \ | |
91 | do { if (!(pend)->list/**/_head) (pend)->list/**/_head = (elt); \ | |
92 | else (pend)->list/**/_tail->next = (elt); \ | |
93 | (pend)->list/**/_tail = (elt); \ | |
94 | } while (0) | |
95 | #endif | |
6de1e2a9 | 96 | |
6de1e2a9 | 97 | static void print_help PARAMS ((void)); |
0b22d65c | 98 | static void path_include PARAMS ((cpp_reader *, |
0b22d65c | 99 | char *, int)); |
674c3b40 | 100 | static void init_library PARAMS ((void)); |
7ca3d2b1 | 101 | static void init_builtins PARAMS ((cpp_reader *)); |
0b22d65c | 102 | static void append_include_chain PARAMS ((cpp_reader *, |
c45da1ca | 103 | char *, int, int)); |
002ee64f | 104 | static struct search_path * remove_dup_dir PARAMS ((cpp_reader *, |
591e15a1 | 105 | struct search_path *)); |
002ee64f | 106 | static struct search_path * remove_dup_dirs PARAMS ((cpp_reader *, |
591e15a1 | 107 | struct search_path *)); |
ae79697b | 108 | static void merge_include_chains PARAMS ((cpp_reader *)); |
d7bc7a98 NB |
109 | static bool push_include PARAMS ((cpp_reader *, |
110 | struct pending_option *)); | |
111 | static void free_chain PARAMS ((struct pending_option *)); | |
dd07b884 | 112 | static void set_lang PARAMS ((cpp_reader *, enum c_lang)); |
7ca3d2b1 NB |
113 | static void init_dependency_output PARAMS ((cpp_reader *)); |
114 | static void init_standard_includes PARAMS ((cpp_reader *)); | |
f5e99456 | 115 | static void read_original_filename PARAMS ((cpp_reader *)); |
2c0accc9 | 116 | static void new_pending_directive PARAMS ((struct cpp_pending *, |
40eac643 NB |
117 | const char *, |
118 | cl_directive_handler)); | |
7ca3d2b1 | 119 | static void output_deps PARAMS ((cpp_reader *)); |
e23c0ba3 | 120 | static int parse_option PARAMS ((const char *)); |
6de1e2a9 | 121 | |
cb773845 ZW |
122 | /* Fourth argument to append_include_chain: chain to use. |
123 | Note it's never asked to append to the quote chain. */ | |
124 | enum { BRACKET = 0, SYSTEM, AFTER }; | |
6de1e2a9 | 125 | |
61d0346d NB |
126 | /* If we have designated initializers (GCC >2.7) these tables can be |
127 | initialized, constant data. Otherwise, they have to be filled in at | |
12cf91fe | 128 | runtime. */ |
61d0346d | 129 | #if HAVE_DESIGNATED_INITIALIZERS |
a9ae4483 | 130 | |
4a58aab6 | 131 | #define init_trigraph_map() /* Nothing. */ |
61d0346d | 132 | #define TRIGRAPH_MAP \ |
562a5c27 | 133 | __extension__ const uchar _cpp_trigraph_map[UCHAR_MAX + 1] = { |
61d0346d | 134 | |
a9ae4483 | 135 | #define END }; |
455d2586 | 136 | #define s(p, v) [p] = v, |
61d0346d | 137 | |
a9ae4483 | 138 | #else |
61d0346d | 139 | |
562a5c27 | 140 | #define TRIGRAPH_MAP uchar _cpp_trigraph_map[UCHAR_MAX + 1] = { 0 }; \ |
61d0346d NB |
141 | static void init_trigraph_map PARAMS ((void)) { \ |
142 | unsigned char *x = _cpp_trigraph_map; | |
143 | ||
ae79697b | 144 | #define END } |
455d2586 | 145 | #define s(p, v) x[p] = v; |
61d0346d | 146 | |
a9ae4483 | 147 | #endif |
6de1e2a9 | 148 | |
61d0346d NB |
149 | TRIGRAPH_MAP |
150 | s('=', '#') s(')', ']') s('!', '|') | |
151 | s('(', '[') s('\'', '^') s('>', '}') | |
152 | s('/', '\\') s('<', '{') s('-', '~') | |
153 | END | |
154 | ||
a9ae4483 | 155 | #undef s |
455d2586 | 156 | #undef END |
61d0346d | 157 | #undef TRIGRAPH_MAP |
6de1e2a9 ZW |
158 | |
159 | /* Given a colon-separated list of file names PATH, | |
160 | add all the names to the search path for include files. */ | |
6de1e2a9 | 161 | static void |
e33f6253 | 162 | path_include (pfile, list, path) |
6de1e2a9 | 163 | cpp_reader *pfile; |
0b22d65c ZW |
164 | char *list; |
165 | int path; | |
6de1e2a9 | 166 | { |
0b22d65c | 167 | char *p, *q, *name; |
6de1e2a9 | 168 | |
0b22d65c | 169 | p = list; |
6de1e2a9 | 170 | |
0b22d65c ZW |
171 | do |
172 | { | |
6de1e2a9 | 173 | /* Find the end of this name. */ |
0b22d65c | 174 | q = p; |
6de1e2a9 | 175 | while (*q != 0 && *q != PATH_SEPARATOR) q++; |
0b22d65c ZW |
176 | if (q == p) |
177 | { | |
178 | /* An empty name in the path stands for the current directory. */ | |
179 | name = (char *) xmalloc (2); | |
180 | name[0] = '.'; | |
181 | name[1] = 0; | |
182 | } | |
183 | else | |
184 | { | |
185 | /* Otherwise use the directory that is named. */ | |
186 | name = (char *) xmalloc (q - p + 1); | |
187 | memcpy (name, p, q - p); | |
188 | name[q - p] = 0; | |
189 | } | |
6de1e2a9 | 190 | |
e33f6253 | 191 | append_include_chain (pfile, name, path, 0); |
6de1e2a9 ZW |
192 | |
193 | /* Advance past this name. */ | |
0b22d65c | 194 | if (*q == 0) |
6de1e2a9 | 195 | break; |
0b22d65c ZW |
196 | p = q + 1; |
197 | } | |
198 | while (1); | |
199 | } | |
200 | ||
bef985f3 | 201 | /* Append DIR to include path PATH. DIR must be allocated on the |
5d8ebbd8 NB |
202 | heap; this routine takes responsibility for freeing it. CXX_AWARE |
203 | is non-zero if the header contains extern "C" guards for C++, | |
204 | otherwise it is zero. */ | |
0b22d65c | 205 | static void |
e33f6253 | 206 | append_include_chain (pfile, dir, path, cxx_aware) |
0b22d65c | 207 | cpp_reader *pfile; |
0b22d65c ZW |
208 | char *dir; |
209 | int path; | |
7d4918a2 | 210 | int cxx_aware ATTRIBUTE_UNUSED; |
0b22d65c | 211 | { |
e33f6253 | 212 | struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
591e15a1 | 213 | struct search_path *new; |
0b22d65c ZW |
214 | struct stat st; |
215 | unsigned int len; | |
216 | ||
f9200da2 | 217 | if (*dir == '\0') |
bef985f3 NB |
218 | { |
219 | free (dir); | |
220 | dir = xstrdup ("."); | |
221 | } | |
b0699dad | 222 | _cpp_simplify_pathname (dir); |
bef985f3 | 223 | |
0b22d65c ZW |
224 | if (stat (dir, &st)) |
225 | { | |
f9200da2 | 226 | /* Dirs that don't exist are silently ignored. */ |
0b22d65c | 227 | if (errno != ENOENT) |
ebef4e8c | 228 | cpp_errno (pfile, DL_ERROR, dir); |
ae79697b | 229 | else if (CPP_OPTION (pfile, verbose)) |
041c3194 | 230 | fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), dir); |
bef985f3 | 231 | free (dir); |
0b22d65c ZW |
232 | return; |
233 | } | |
234 | ||
235 | if (!S_ISDIR (st.st_mode)) | |
236 | { | |
ebef4e8c | 237 | cpp_error_with_line (pfile, DL_ERROR, 0, 0, "%s: Not a directory", dir); |
bef985f3 | 238 | free (dir); |
0b22d65c ZW |
239 | return; |
240 | } | |
241 | ||
242 | len = strlen (dir); | |
243 | if (len > pfile->max_include_len) | |
244 | pfile->max_include_len = len; | |
ae79697b | 245 | |
591e15a1 | 246 | new = (struct search_path *) xmalloc (sizeof (struct search_path)); |
0b22d65c | 247 | new->name = dir; |
591e15a1 | 248 | new->len = len; |
ca47c89e | 249 | INO_T_COPY (new->ino, st.st_ino); |
0b22d65c | 250 | new->dev = st.st_dev; |
4737b274 CF |
251 | /* Both systm and after include file lists should be treated as system |
252 | include files since these two lists are really just a concatenation | |
ec5c56db | 253 | of one "system" list. */ |
4737b274 | 254 | if (path == SYSTEM || path == AFTER) |
52b357ea JJ |
255 | #ifdef NO_IMPLICIT_EXTERN_C |
256 | new->sysp = 1; | |
257 | #else | |
c45da1ca | 258 | new->sysp = cxx_aware ? 1 : 2; |
52b357ea | 259 | #endif |
c45da1ca ZW |
260 | else |
261 | new->sysp = 0; | |
0b22d65c | 262 | new->name_map = NULL; |
503cb436 | 263 | new->next = NULL; |
0b22d65c ZW |
264 | |
265 | switch (path) | |
266 | { | |
0b22d65c ZW |
267 | case BRACKET: APPEND (pend, brack, new); break; |
268 | case SYSTEM: APPEND (pend, systm, new); break; | |
269 | case AFTER: APPEND (pend, after, new); break; | |
6de1e2a9 ZW |
270 | } |
271 | } | |
272 | ||
dd69c71b NB |
273 | /* Handle a duplicated include path. PREV is the link in the chain |
274 | before the duplicate. The duplicate is removed from the chain and | |
275 | freed. Returns PREV. */ | |
002ee64f | 276 | static struct search_path * |
dd69c71b NB |
277 | remove_dup_dir (pfile, prev) |
278 | cpp_reader *pfile; | |
591e15a1 | 279 | struct search_path *prev; |
dd69c71b | 280 | { |
591e15a1 | 281 | struct search_path *cur = prev->next; |
dd69c71b NB |
282 | |
283 | if (CPP_OPTION (pfile, verbose)) | |
284 | fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"), cur->name); | |
285 | ||
286 | prev->next = cur->next; | |
591e15a1 | 287 | free ((PTR) cur->name); |
dd69c71b NB |
288 | free (cur); |
289 | ||
290 | return prev; | |
291 | } | |
292 | ||
293 | /* Remove duplicate directories from a chain. Returns the tail of the | |
294 | chain, or NULL if the chain is empty. This algorithm is quadratic | |
295 | in the number of -I switches, which is acceptable since there | |
296 | aren't usually that many of them. */ | |
002ee64f | 297 | static struct search_path * |
dd69c71b NB |
298 | remove_dup_dirs (pfile, head) |
299 | cpp_reader *pfile; | |
591e15a1 | 300 | struct search_path *head; |
dd69c71b | 301 | { |
591e15a1 | 302 | struct search_path *prev = NULL, *cur, *other; |
dd69c71b NB |
303 | |
304 | for (cur = head; cur; cur = cur->next) | |
305 | { | |
306 | for (other = head; other != cur; other = other->next) | |
307 | if (INO_T_EQ (cur->ino, other->ino) && cur->dev == other->dev) | |
308 | { | |
002ee64f | 309 | if (cur->sysp && !other->sysp) |
dbead49c | 310 | { |
ebef4e8c NB |
311 | cpp_error (pfile, DL_WARNING, |
312 | "changing search order for system directory \"%s\"", | |
313 | cur->name); | |
dbead49c | 314 | if (strcmp (cur->name, other->name)) |
ebef4e8c NB |
315 | cpp_error (pfile, DL_WARNING, |
316 | " as it is the same as non-system directory \"%s\"", | |
317 | other->name); | |
dbead49c | 318 | else |
ebef4e8c NB |
319 | cpp_error (pfile, DL_WARNING, |
320 | " as it has already been specified as a non-system directory"); | |
dbead49c | 321 | } |
dd69c71b NB |
322 | cur = remove_dup_dir (pfile, prev); |
323 | break; | |
324 | } | |
325 | prev = cur; | |
326 | } | |
327 | ||
328 | return prev; | |
329 | } | |
330 | ||
88ae23e7 ZW |
331 | /* Merge the four include chains together in the order quote, bracket, |
332 | system, after. Remove duplicate dirs (as determined by | |
333 | INO_T_EQ()). The system_include and after_include chains are never | |
334 | referred to again after this function; all access is through the | |
5d8ebbd8 | 335 | bracket_include path. */ |
88ae23e7 | 336 | static void |
ae79697b ZW |
337 | merge_include_chains (pfile) |
338 | cpp_reader *pfile; | |
88ae23e7 | 339 | { |
591e15a1 | 340 | struct search_path *quote, *brack, *systm, *qtail; |
88ae23e7 | 341 | |
ae79697b | 342 | struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
88ae23e7 | 343 | |
ae79697b ZW |
344 | quote = pend->quote_head; |
345 | brack = pend->brack_head; | |
346 | systm = pend->systm_head; | |
dd69c71b | 347 | qtail = pend->quote_tail; |
88ae23e7 | 348 | |
dd69c71b NB |
349 | /* Paste together bracket, system, and after include chains. */ |
350 | if (systm) | |
351 | pend->systm_tail->next = pend->after_head; | |
88ae23e7 | 352 | else |
dd69c71b NB |
353 | systm = pend->after_head; |
354 | ||
355 | if (brack) | |
356 | pend->brack_tail->next = systm; | |
88ae23e7 ZW |
357 | else |
358 | brack = systm; | |
359 | ||
dd69c71b NB |
360 | /* This is a bit tricky. First we drop dupes from the quote-include |
361 | list. Then we drop dupes from the bracket-include list. | |
362 | Finally, if qtail and brack are the same directory, we cut out | |
cb773845 | 363 | brack and move brack up to point to qtail. |
88ae23e7 ZW |
364 | |
365 | We can't just merge the lists and then uniquify them because | |
366 | then we may lose directories from the <> search path that should | |
367 | be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however | |
368 | safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written | |
dd69c71b | 369 | -Ibar -I- -Ifoo -Iquux. */ |
88ae23e7 | 370 | |
dd69c71b NB |
371 | remove_dup_dirs (pfile, brack); |
372 | qtail = remove_dup_dirs (pfile, quote); | |
88ae23e7 ZW |
373 | |
374 | if (quote) | |
375 | { | |
dd69c71b NB |
376 | qtail->next = brack; |
377 | ||
378 | /* If brack == qtail, remove brack as it's simpler. */ | |
afb58288 ZW |
379 | if (brack && INO_T_EQ (qtail->ino, brack->ino) |
380 | && qtail->dev == brack->dev) | |
dd69c71b | 381 | brack = remove_dup_dir (pfile, qtail); |
88ae23e7 ZW |
382 | } |
383 | else | |
bef985f3 | 384 | quote = brack; |
88ae23e7 | 385 | |
ae79697b ZW |
386 | CPP_OPTION (pfile, quote_include) = quote; |
387 | CPP_OPTION (pfile, bracket_include) = brack; | |
88ae23e7 ZW |
388 | } |
389 | ||
5d8ebbd8 NB |
390 | /* A set of booleans indicating what CPP features each source language |
391 | requires. */ | |
a01eb545 ZW |
392 | struct lang_flags |
393 | { | |
394 | char c99; | |
395 | char objc; | |
396 | char cplusplus; | |
397 | char extended_numbers; | |
398 | char trigraphs; | |
399 | char dollars_in_ident; | |
400 | char cplusplus_comments; | |
401 | char digraphs; | |
402 | }; | |
403 | ||
404 | /* ??? Enable $ in identifiers in assembly? */ | |
405 | static const struct lang_flags lang_defaults[] = | |
406 | { /* c99 objc c++ xnum trig dollar c++comm digr */ | |
407 | /* GNUC89 */ { 0, 0, 0, 1, 0, 1, 1, 1 }, | |
408 | /* GNUC99 */ { 1, 0, 0, 1, 0, 1, 1, 1 }, | |
409 | /* STDC89 */ { 0, 0, 0, 0, 1, 0, 0, 0 }, | |
410 | /* STDC94 */ { 0, 0, 0, 0, 1, 0, 0, 1 }, | |
411 | /* STDC99 */ { 1, 0, 0, 1, 1, 0, 1, 1 }, | |
412 | /* GNUCXX */ { 0, 0, 1, 1, 0, 1, 1, 1 }, | |
413 | /* CXX98 */ { 0, 0, 1, 1, 1, 0, 1, 1 }, | |
414 | /* OBJC */ { 0, 1, 0, 1, 0, 1, 1, 1 }, | |
415 | /* OBJCXX */ { 0, 1, 1, 1, 0, 1, 1, 1 }, | |
416 | /* ASM */ { 0, 0, 0, 1, 0, 0, 1, 0 } | |
417 | }; | |
418 | ||
5d8ebbd8 | 419 | /* Sets internal flags correctly for a given language. */ |
dd07b884 NB |
420 | static void |
421 | set_lang (pfile, lang) | |
422 | cpp_reader *pfile; | |
423 | enum c_lang lang; | |
424 | { | |
a01eb545 ZW |
425 | const struct lang_flags *l = &lang_defaults[(int) lang]; |
426 | ||
bdb05a7b | 427 | CPP_OPTION (pfile, lang) = lang; |
dd07b884 | 428 | |
a01eb545 ZW |
429 | CPP_OPTION (pfile, c99) = l->c99; |
430 | CPP_OPTION (pfile, objc) = l->objc; | |
431 | CPP_OPTION (pfile, cplusplus) = l->cplusplus; | |
432 | CPP_OPTION (pfile, extended_numbers) = l->extended_numbers; | |
433 | CPP_OPTION (pfile, trigraphs) = l->trigraphs; | |
434 | CPP_OPTION (pfile, dollars_in_ident) = l->dollars_in_ident; | |
435 | CPP_OPTION (pfile, cplusplus_comments) = l->cplusplus_comments; | |
436 | CPP_OPTION (pfile, digraphs) = l->digraphs; | |
dd07b884 NB |
437 | } |
438 | ||
7ca3d2b1 NB |
439 | #ifdef HOST_EBCDIC |
440 | static int opt_comp PARAMS ((const void *, const void *)); | |
441 | ||
442 | /* Run-time sorting of options array. */ | |
443 | static int | |
444 | opt_comp (p1, p2) | |
445 | const void *p1, *p2; | |
446 | { | |
447 | return strcmp (((struct cl_option *) p1)->opt_text, | |
448 | ((struct cl_option *) p2)->opt_text); | |
449 | } | |
450 | #endif | |
cf44ea52 | 451 | |
7ca3d2b1 NB |
452 | /* init initializes library global state. It might not need to |
453 | do anything depending on the platform and compiler. */ | |
cf44ea52 | 454 | static void |
674c3b40 | 455 | init_library () |
cf44ea52 | 456 | { |
7ca3d2b1 NB |
457 | static int initialized = 0; |
458 | ||
459 | if (! initialized) | |
460 | { | |
461 | initialized = 1; | |
462 | ||
cf44ea52 | 463 | #ifdef HOST_EBCDIC |
7ca3d2b1 NB |
464 | /* For non-ASCII hosts, the cl_options array needs to be sorted at |
465 | runtime. */ | |
466 | qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp); | |
cf44ea52 NB |
467 | #endif |
468 | ||
7ca3d2b1 NB |
469 | /* Set up the trigraph map. This doesn't need to do anything if |
470 | we were compiled with a compiler that supports C99 designated | |
471 | initializers. */ | |
472 | init_trigraph_map (); | |
473 | } | |
cf44ea52 NB |
474 | } |
475 | ||
ec5c56db | 476 | /* Initialize a cpp_reader structure. */ |
cf44ea52 | 477 | cpp_reader * |
f5e99456 | 478 | cpp_create_reader (lang) |
dd07b884 | 479 | enum c_lang lang; |
6de1e2a9 | 480 | { |
7ca3d2b1 | 481 | cpp_reader *pfile; |
93c80368 | 482 | |
cf44ea52 | 483 | /* Initialise this instance of the library if it hasn't been already. */ |
674c3b40 | 484 | init_library (); |
7ca3d2b1 NB |
485 | |
486 | pfile = (cpp_reader *) xcalloc (1, sizeof (cpp_reader)); | |
93c80368 | 487 | |
c740cee2 | 488 | set_lang (pfile, lang); |
ae79697b ZW |
489 | CPP_OPTION (pfile, warn_import) = 1; |
490 | CPP_OPTION (pfile, discard_comments) = 1; | |
477cdac7 | 491 | CPP_OPTION (pfile, discard_comments_in_macro_exp) = 1; |
ae79697b | 492 | CPP_OPTION (pfile, show_column) = 1; |
6ab3e7dd | 493 | CPP_OPTION (pfile, tabstop) = 8; |
be768055 | 494 | CPP_OPTION (pfile, operator_names) = 1; |
909de5da | 495 | CPP_OPTION (pfile, warn_endif_labels) = 1; |
0fef3fd0 NB |
496 | #if DEFAULT_SIGNED_CHAR |
497 | CPP_OPTION (pfile, signed_char) = 1; | |
498 | #else | |
499 | CPP_OPTION (pfile, signed_char) = 0; | |
500 | #endif | |
ae79697b ZW |
501 | |
502 | CPP_OPTION (pfile, pending) = | |
503 | (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending)); | |
504 | ||
f7114e17 NB |
505 | /* It's simplest to just create this struct whether or not it will |
506 | be needed. */ | |
507 | pfile->deps = deps_init (); | |
508 | ||
50410426 NB |
509 | /* Initialise the line map. Start at logical line 1, so we can use |
510 | a line number of zero for special states. */ | |
d82fc108 | 511 | init_line_maps (&pfile->line_maps); |
50410426 | 512 | pfile->line = 1; |
d82fc108 | 513 | |
4a58aab6 | 514 | /* Initialize lexer state. */ |
93c80368 NB |
515 | pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments); |
516 | ||
4ed5bcfb | 517 | /* Set up static tokens. */ |
93c80368 | 518 | pfile->date.type = CPP_EOF; |
4ed5bcfb NB |
519 | pfile->avoid_paste.type = CPP_PADDING; |
520 | pfile->avoid_paste.val.source = NULL; | |
521 | pfile->eof.type = CPP_EOF; | |
522 | pfile->eof.flags = 0; | |
93c80368 | 523 | |
5fddcffc NB |
524 | /* Create a token buffer for the lexer. */ |
525 | _cpp_init_tokenrun (&pfile->base_run, 250); | |
526 | pfile->cur_run = &pfile->base_run; | |
527 | pfile->cur_token = pfile->base_run.base; | |
5fddcffc | 528 | |
93c80368 NB |
529 | /* Initialise the base context. */ |
530 | pfile->context = &pfile->base_context; | |
531 | pfile->base_context.macro = 0; | |
532 | pfile->base_context.prev = pfile->base_context.next = 0; | |
533 | ||
8c3b2693 NB |
534 | /* Aligned and unaligned storage. */ |
535 | pfile->a_buff = _cpp_get_buff (pfile, 0); | |
ece54d54 | 536 | pfile->u_buff = _cpp_get_buff (pfile, 0); |
93c80368 | 537 | |
2a967f3d NB |
538 | /* Initialise the buffer obstack. */ |
539 | gcc_obstack_init (&pfile->buffer_ob); | |
540 | ||
c71f835b | 541 | _cpp_init_includes (pfile); |
cf44ea52 NB |
542 | |
543 | return pfile; | |
f2d5f0cc ZW |
544 | } |
545 | ||
400023a3 | 546 | /* Free resources used by PFILE. Accessing PFILE after this function |
5d8ebbd8 | 547 | returns leads to undefined behaviour. Returns the error count. */ |
400023a3 NB |
548 | int |
549 | cpp_destroy (pfile) | |
6de1e2a9 ZW |
550 | cpp_reader *pfile; |
551 | { | |
400023a3 | 552 | int result; |
591e15a1 | 553 | struct search_path *dir, *dirn; |
93c80368 | 554 | cpp_context *context, *contextn; |
50410426 | 555 | tokenrun *run, *runn; |
709e9e50 | 556 | |
af0d16cd NB |
557 | free_chain (CPP_OPTION (pfile, pending)->include_head); |
558 | free (CPP_OPTION (pfile, pending)); | |
559 | ||
38b24ee2 | 560 | while (CPP_BUFFER (pfile) != NULL) |
ef6e958a | 561 | _cpp_pop_buffer (pfile); |
6de1e2a9 | 562 | |
93c80368 | 563 | if (pfile->macro_buffer) |
4b49c365 AO |
564 | { |
565 | free ((PTR) pfile->macro_buffer); | |
566 | pfile->macro_buffer = NULL; | |
567 | pfile->macro_buffer_len = 0; | |
568 | } | |
93c80368 | 569 | |
f7114e17 | 570 | deps_free (pfile->deps); |
2a967f3d | 571 | obstack_free (&pfile->buffer_ob, 0); |
49e6c08e | 572 | |
2a967f3d | 573 | _cpp_destroy_hashtable (pfile); |
bfb9dc7f | 574 | _cpp_cleanup_includes (pfile); |
709e9e50 | 575 | |
8c3b2693 | 576 | _cpp_free_buff (pfile->a_buff); |
ece54d54 | 577 | _cpp_free_buff (pfile->u_buff); |
b8af0ca5 | 578 | _cpp_free_buff (pfile->free_buffs); |
93c80368 | 579 | |
50410426 NB |
580 | for (run = &pfile->base_run; run; run = runn) |
581 | { | |
582 | runn = run->next; | |
583 | free (run->base); | |
584 | if (run != &pfile->base_run) | |
585 | free (run); | |
586 | } | |
587 | ||
93c80368 | 588 | for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn) |
709e9e50 | 589 | { |
93c80368 | 590 | dirn = dir->next; |
591e15a1 | 591 | free ((PTR) dir->name); |
709e9e50 NB |
592 | free (dir); |
593 | } | |
93c80368 NB |
594 | |
595 | for (context = pfile->base_context.next; context; context = contextn) | |
596 | { | |
597 | contextn = context->next; | |
598 | free (context); | |
599 | } | |
400023a3 | 600 | |
d82fc108 NB |
601 | free_line_maps (&pfile->line_maps); |
602 | ||
400023a3 NB |
603 | result = pfile->errors; |
604 | free (pfile); | |
605 | ||
606 | return result; | |
6de1e2a9 ZW |
607 | } |
608 | ||
609 | ||
93c80368 NB |
610 | /* This structure defines one built-in identifier. A node will be |
611 | entered in the hash table under the name NAME, with value VALUE (if | |
612 | any). If flags has OPERATOR, the node's operator field is used; if | |
618cdda7 NB |
613 | flags has BUILTIN the node's builtin field is used. Macros that are |
614 | known at build time should not be flagged BUILTIN, as then they do | |
615 | not appear in macro dumps with e.g. -dM or -dD. | |
92936ecf ZW |
616 | |
617 | Two values are not compile time constants, so we tag | |
041c3194 | 618 | them in the FLAGS field instead: |
8c389f84 ZW |
619 | VERS value is the global version_string, quoted |
620 | ULP value is the global user_label_prefix | |
92936ecf | 621 | |
93c80368 | 622 | Also, macros with CPLUS set in the flags field are entered only for C++. */ |
a9ae4483 ZW |
623 | struct builtin |
624 | { | |
562a5c27 | 625 | const uchar *name; |
041c3194 | 626 | const char *value; |
93c80368 NB |
627 | unsigned char builtin; |
628 | unsigned char operator; | |
a9ae4483 | 629 | unsigned short flags; |
93c80368 | 630 | unsigned short len; |
a9ae4483 | 631 | }; |
93c80368 NB |
632 | #define VERS 0x01 |
633 | #define ULP 0x02 | |
634 | #define CPLUS 0x04 | |
635 | #define BUILTIN 0x08 | |
636 | #define OPERATOR 0x10 | |
637 | ||
638 | #define B(n, t) { U n, 0, t, 0, BUILTIN, sizeof n - 1 } | |
639 | #define C(n, v) { U n, v, 0, 0, 0, sizeof n - 1 } | |
640 | #define X(n, f) { U n, 0, 0, 0, f, sizeof n - 1 } | |
641 | #define O(n, c, f) { U n, 0, 0, c, OPERATOR | f, sizeof n - 1 } | |
a9ae4483 | 642 | static const struct builtin builtin_array[] = |
6de1e2a9 | 643 | { |
93c80368 NB |
644 | B("__TIME__", BT_TIME), |
645 | B("__DATE__", BT_DATE), | |
646 | B("__FILE__", BT_FILE), | |
647 | B("__BASE_FILE__", BT_BASE_FILE), | |
648 | B("__LINE__", BT_SPECLINE), | |
649 | B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL), | |
644eddaa | 650 | B("_Pragma", BT_PRAGMA), |
12cf91fe | 651 | |
041c3194 ZW |
652 | X("__VERSION__", VERS), |
653 | X("__USER_LABEL_PREFIX__", ULP), | |
12cf91fe ZW |
654 | C("__REGISTER_PREFIX__", REGISTER_PREFIX), |
655 | C("__HAVE_BUILTIN_SETJMP__", "1"), | |
0d24f4d1 ZW |
656 | #if USING_SJLJ_EXCEPTIONS |
657 | /* libgcc needs to know this. */ | |
658 | C("__USING_SJLJ_EXCEPTIONS__","1"), | |
659 | #endif | |
6de1e2a9 | 660 | #ifndef NO_BUILTIN_SIZE_TYPE |
12cf91fe | 661 | C("__SIZE_TYPE__", SIZE_TYPE), |
6de1e2a9 ZW |
662 | #endif |
663 | #ifndef NO_BUILTIN_PTRDIFF_TYPE | |
12cf91fe | 664 | C("__PTRDIFF_TYPE__", PTRDIFF_TYPE), |
6de1e2a9 | 665 | #endif |
0209c340 | 666 | #ifndef NO_BUILTIN_WCHAR_TYPE |
12cf91fe | 667 | C("__WCHAR_TYPE__", WCHAR_TYPE), |
0209c340 | 668 | #endif |
d6777972 JM |
669 | #ifndef NO_BUILTIN_WINT_TYPE |
670 | C("__WINT_TYPE__", WINT_TYPE), | |
671 | #endif | |
618cdda7 NB |
672 | #ifdef STDC_0_IN_SYSTEM_HEADERS |
673 | B("__STDC__", BT_STDC), | |
674 | #else | |
675 | C("__STDC__", "1"), | |
676 | #endif | |
92936ecf ZW |
677 | |
678 | /* Named operators known to the preprocessor. These cannot be #defined | |
679 | and always have their stated meaning. They are treated like normal | |
93c80368 | 680 | identifiers except for the type code and the meaning. Most of them |
92936ecf | 681 | are only for C++ (but see iso646.h). */ |
92936ecf ZW |
682 | O("and", CPP_AND_AND, CPLUS), |
683 | O("and_eq", CPP_AND_EQ, CPLUS), | |
684 | O("bitand", CPP_AND, CPLUS), | |
685 | O("bitor", CPP_OR, CPLUS), | |
686 | O("compl", CPP_COMPL, CPLUS), | |
687 | O("not", CPP_NOT, CPLUS), | |
688 | O("not_eq", CPP_NOT_EQ, CPLUS), | |
689 | O("or", CPP_OR_OR, CPLUS), | |
690 | O("or_eq", CPP_OR_EQ, CPLUS), | |
691 | O("xor", CPP_XOR, CPLUS), | |
93c80368 | 692 | O("xor_eq", CPP_XOR_EQ, CPLUS) |
a9ae4483 | 693 | }; |
12cf91fe ZW |
694 | #undef B |
695 | #undef C | |
696 | #undef X | |
be768055 | 697 | #undef O |
ca7558fc | 698 | #define builtin_array_end (builtin_array + ARRAY_SIZE (builtin_array)) |
a9ae4483 | 699 | |
f5e99456 | 700 | /* Subroutine of cpp_read_main_file; reads the builtins table above and |
5d8ebbd8 | 701 | enters them, and language-specific macros, into the hash table. */ |
a9ae4483 | 702 | static void |
7ca3d2b1 | 703 | init_builtins (pfile) |
a9ae4483 ZW |
704 | cpp_reader *pfile; |
705 | { | |
a9ae4483 | 706 | const struct builtin *b; |
771c4df3 | 707 | |
8c389f84 | 708 | for(b = builtin_array; b < builtin_array_end; b++) |
6de1e2a9 | 709 | { |
93c80368 | 710 | if ((b->flags & CPLUS) && ! CPP_OPTION (pfile, cplusplus)) |
92936ecf ZW |
711 | continue; |
712 | ||
be768055 JJ |
713 | if ((b->flags & OPERATOR) && ! CPP_OPTION (pfile, operator_names)) |
714 | continue; | |
715 | ||
93c80368 NB |
716 | if (b->flags & (OPERATOR | BUILTIN)) |
717 | { | |
718 | cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len); | |
719 | if (b->flags & OPERATOR) | |
720 | { | |
721 | hp->flags |= NODE_OPERATOR; | |
722 | hp->value.operator = b->operator; | |
723 | } | |
724 | else | |
725 | { | |
726 | hp->type = NT_MACRO; | |
618cdda7 | 727 | hp->flags |= NODE_BUILTIN | NODE_WARN; |
93c80368 NB |
728 | hp->value.builtin = b->builtin; |
729 | } | |
730 | } | |
731 | else /* A standard macro of some kind. */ | |
8c389f84 | 732 | { |
041c3194 ZW |
733 | const char *val; |
734 | char *str; | |
735 | ||
736 | if (b->flags & VERS) | |
737 | { | |
2c8f0515 ZW |
738 | /* Allocate enough space for 'name "value"\n\0'. */ |
739 | str = alloca (b->len + strlen (version_string) + 5); | |
740 | sprintf (str, "%s \"%s\"\n", b->name, version_string); | |
041c3194 ZW |
741 | } |
742 | else | |
743 | { | |
744 | if (b->flags & ULP) | |
771c4df3 | 745 | val = CPP_OPTION (pfile, user_label_prefix); |
041c3194 ZW |
746 | else |
747 | val = b->value; | |
748 | ||
2c8f0515 ZW |
749 | /* Allocate enough space for "name value\n\0". */ |
750 | str = alloca (b->len + strlen (val) + 3); | |
751 | sprintf(str, "%s %s\n", b->name, val); | |
041c3194 | 752 | } |
c154ba66 | 753 | |
2c8f0515 | 754 | _cpp_define_builtin (pfile, str); |
8c389f84 | 755 | } |
6de1e2a9 | 756 | } |
c740cee2 NB |
757 | |
758 | if (CPP_OPTION (pfile, cplusplus)) | |
618cdda7 NB |
759 | { |
760 | _cpp_define_builtin (pfile, "__cplusplus 1"); | |
761 | if (SUPPORTS_ONE_ONLY) | |
762 | _cpp_define_builtin (pfile, "__GXX_WEAK__ 1"); | |
763 | else | |
764 | _cpp_define_builtin (pfile, "__GXX_WEAK__ 0"); | |
765 | } | |
c740cee2 NB |
766 | if (CPP_OPTION (pfile, objc)) |
767 | _cpp_define_builtin (pfile, "__OBJC__ 1"); | |
768 | ||
769 | if (CPP_OPTION (pfile, lang) == CLK_STDC94) | |
770 | _cpp_define_builtin (pfile, "__STDC_VERSION__ 199409L"); | |
771 | else if (CPP_OPTION (pfile, c99)) | |
772 | _cpp_define_builtin (pfile, "__STDC_VERSION__ 199901L"); | |
773 | ||
0fef3fd0 NB |
774 | if (CPP_OPTION (pfile, signed_char) == 0) |
775 | _cpp_define_builtin (pfile, "__CHAR_UNSIGNED__ 1"); | |
776 | ||
c740cee2 NB |
777 | if (CPP_OPTION (pfile, lang) == CLK_STDC89 |
778 | || CPP_OPTION (pfile, lang) == CLK_STDC94 | |
779 | || CPP_OPTION (pfile, lang) == CLK_STDC99) | |
780 | _cpp_define_builtin (pfile, "__STRICT_ANSI__ 1"); | |
781 | else if (CPP_OPTION (pfile, lang) == CLK_ASM) | |
782 | _cpp_define_builtin (pfile, "__ASSEMBLER__ 1"); | |
6de1e2a9 | 783 | } |
93c80368 NB |
784 | #undef BUILTIN |
785 | #undef OPERATOR | |
6feb7728 | 786 | #undef VERS |
a9ae4483 | 787 | #undef ULP |
93c80368 | 788 | #undef CPLUS |
041c3194 | 789 | #undef builtin_array_end |
6de1e2a9 | 790 | |
c45da1ca ZW |
791 | /* And another subroutine. This one sets up the standard include path. */ |
792 | static void | |
7ca3d2b1 | 793 | init_standard_includes (pfile) |
c45da1ca ZW |
794 | cpp_reader *pfile; |
795 | { | |
c45da1ca | 796 | char *path; |
455d2586 | 797 | const struct default_include *p; |
ae79697b | 798 | const char *specd_prefix = CPP_OPTION (pfile, include_prefix); |
c45da1ca ZW |
799 | |
800 | /* Several environment variables may add to the include search path. | |
801 | CPATH specifies an additional list of directories to be searched | |
802 | as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH, | |
803 | etc. specify an additional list of directories to be searched as | |
804 | if specified with -isystem, for the language indicated. */ | |
805 | ||
806 | GET_ENV_PATH_LIST (path, "CPATH"); | |
807 | if (path != 0 && *path != 0) | |
e33f6253 | 808 | path_include (pfile, path, BRACKET); |
c45da1ca | 809 | |
ae79697b | 810 | switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus)) |
c45da1ca ZW |
811 | { |
812 | case 0: | |
813 | GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH"); | |
814 | break; | |
815 | case 1: | |
816 | GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH"); | |
817 | break; | |
818 | case 2: | |
819 | GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH"); | |
820 | break; | |
821 | case 3: | |
822 | GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH"); | |
823 | break; | |
824 | } | |
825 | if (path != 0 && *path != 0) | |
e33f6253 | 826 | path_include (pfile, path, SYSTEM); |
c45da1ca ZW |
827 | |
828 | /* Search "translated" versions of GNU directories. | |
829 | These have /usr/local/lib/gcc... replaced by specd_prefix. */ | |
60893f43 | 830 | if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len) |
c45da1ca | 831 | { |
c45da1ca | 832 | /* Remove the `include' from /usr/local/lib/gcc.../include. |
ec5c56db | 833 | GCC_INCLUDE_DIR will always end in /include. */ |
60893f43 ZW |
834 | int default_len = cpp_GCC_INCLUDE_DIR_len; |
835 | char *default_prefix = (char *) alloca (default_len + 1); | |
c45da1ca ZW |
836 | int specd_len = strlen (specd_prefix); |
837 | ||
60893f43 | 838 | memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len); |
c45da1ca ZW |
839 | default_prefix[default_len] = '\0'; |
840 | ||
60893f43 | 841 | for (p = cpp_include_defaults; p->fname; p++) |
c45da1ca ZW |
842 | { |
843 | /* Some standard dirs are only for C++. */ | |
844 | if (!p->cplusplus | |
ae79697b ZW |
845 | || (CPP_OPTION (pfile, cplusplus) |
846 | && !CPP_OPTION (pfile, no_standard_cplusplus_includes))) | |
c45da1ca ZW |
847 | { |
848 | /* Does this dir start with the prefix? */ | |
61d0346d | 849 | if (!memcmp (p->fname, default_prefix, default_len)) |
c45da1ca ZW |
850 | { |
851 | /* Yes; change prefix and add to search list. */ | |
852 | int flen = strlen (p->fname); | |
853 | int this_len = specd_len + flen - default_len; | |
854 | char *str = (char *) xmalloc (this_len + 1); | |
855 | memcpy (str, specd_prefix, specd_len); | |
856 | memcpy (str + specd_len, | |
857 | p->fname + default_len, | |
858 | flen - default_len + 1); | |
859 | ||
e33f6253 | 860 | append_include_chain (pfile, str, SYSTEM, p->cxx_aware); |
c45da1ca ZW |
861 | } |
862 | } | |
863 | } | |
864 | } | |
865 | ||
866 | /* Search ordinary names for GNU include directories. */ | |
60893f43 | 867 | for (p = cpp_include_defaults; p->fname; p++) |
c45da1ca ZW |
868 | { |
869 | /* Some standard dirs are only for C++. */ | |
870 | if (!p->cplusplus | |
ae79697b ZW |
871 | || (CPP_OPTION (pfile, cplusplus) |
872 | && !CPP_OPTION (pfile, no_standard_cplusplus_includes))) | |
c45da1ca | 873 | { |
51c04256 | 874 | char *str = update_path (p->fname, p->component); |
e33f6253 | 875 | append_include_chain (pfile, str, SYSTEM, p->cxx_aware); |
c45da1ca ZW |
876 | } |
877 | } | |
878 | } | |
879 | ||
5d8ebbd8 | 880 | /* Pushes a command line -imacro and -include file indicated by P onto |
d7bc7a98 NB |
881 | the buffer stack. Returns non-zero if successful. */ |
882 | static bool | |
883 | push_include (pfile, p) | |
4a58aab6 NB |
884 | cpp_reader *pfile; |
885 | struct pending_option *p; | |
4a58aab6 | 886 | { |
d7bc7a98 | 887 | cpp_token header; |
4a58aab6 | 888 | |
d7bc7a98 NB |
889 | /* Later: maybe update this to use the #include "" search path |
890 | if cpp_read_file fails. */ | |
891 | header.type = CPP_STRING; | |
892 | header.val.str.text = (const unsigned char *) p->arg; | |
893 | header.val.str.len = strlen (p->arg); | |
894 | /* Make the command line directive take up a line. */ | |
50410426 | 895 | pfile->line++; |
d7bc7a98 NB |
896 | |
897 | return _cpp_execute_include (pfile, &header, IT_CMDLINE); | |
898 | } | |
899 | ||
900 | /* Frees a pending_option chain. */ | |
901 | static void | |
902 | free_chain (head) | |
903 | struct pending_option *head; | |
904 | { | |
905 | struct pending_option *next; | |
906 | ||
907 | while (head) | |
908 | { | |
909 | next = head->next; | |
910 | free (head); | |
911 | head = next; | |
4a58aab6 NB |
912 | } |
913 | } | |
914 | ||
f5e99456 NB |
915 | /* This is called after options have been parsed, and partially |
916 | processed. Setup for processing input from the file named FNAME, | |
917 | or stdin if it is the empty string. Return the original filename | |
918 | on success (e.g. foo.i->foo.c), or NULL on failure. */ | |
919 | const char * | |
920 | cpp_read_main_file (pfile, fname, table) | |
6de1e2a9 | 921 | cpp_reader *pfile; |
7ceb3598 | 922 | const char *fname; |
f5e99456 | 923 | hash_table *table; |
6de1e2a9 | 924 | { |
f5e99456 NB |
925 | /* The front ends don't set up the hash table until they have |
926 | finished processing the command line options, so initializing the | |
927 | hashtable is deferred until now. */ | |
928 | _cpp_init_hashtable (pfile, table); | |
929 | ||
c45da1ca | 930 | /* Set up the include search path now. */ |
ae79697b | 931 | if (! CPP_OPTION (pfile, no_standard_includes)) |
7ca3d2b1 | 932 | init_standard_includes (pfile); |
c45da1ca | 933 | |
ae79697b | 934 | merge_include_chains (pfile); |
c45da1ca ZW |
935 | |
936 | /* With -v, print the list of dirs to search. */ | |
ae79697b | 937 | if (CPP_OPTION (pfile, verbose)) |
c45da1ca | 938 | { |
591e15a1 | 939 | struct search_path *l; |
c45da1ca | 940 | fprintf (stderr, _("#include \"...\" search starts here:\n")); |
ae79697b | 941 | for (l = CPP_OPTION (pfile, quote_include); l; l = l->next) |
c45da1ca | 942 | { |
ae79697b | 943 | if (l == CPP_OPTION (pfile, bracket_include)) |
c45da1ca ZW |
944 | fprintf (stderr, _("#include <...> search starts here:\n")); |
945 | fprintf (stderr, " %s\n", l->name); | |
946 | } | |
947 | fprintf (stderr, _("End of search list.\n")); | |
948 | } | |
949 | ||
96302433 | 950 | if (CPP_OPTION (pfile, print_deps)) |
7855db7c | 951 | /* Set the default target (if there is none already). */ |
373e2177 | 952 | deps_add_default_target (pfile->deps, fname); |
96302433 | 953 | |
f5e99456 | 954 | /* Open the main input file. */ |
614c7d37 | 955 | if (!_cpp_read_file (pfile, fname)) |
f5e99456 | 956 | return NULL; |
c45da1ca | 957 | |
5993019d NB |
958 | /* Set this after cpp_post_options so the client can change the |
959 | option if it wishes, and after stacking the main file so we don't | |
960 | trace the main file. */ | |
961 | pfile->line_maps.trace_includes = CPP_OPTION (pfile, print_include_names); | |
962 | ||
f5e99456 NB |
963 | /* For foo.i, read the original filename foo.c now, for the benefit |
964 | of the front ends. */ | |
965 | if (CPP_OPTION (pfile, preprocessed)) | |
966 | read_original_filename (pfile); | |
967 | ||
968 | return pfile->map->to_file; | |
969 | } | |
970 | ||
971 | /* For preprocessed files, if the first tokens are of the form # NUM. | |
972 | handle the directive so we know the original file name. This will | |
973 | generate file_change callbacks, which the front ends must handle | |
974 | appropriately given their state of initialization. */ | |
975 | static void | |
976 | read_original_filename (pfile) | |
977 | cpp_reader *pfile; | |
978 | { | |
979 | const cpp_token *token, *token1; | |
980 | ||
981 | /* Lex ahead; if the first tokens are of the form # NUM, then | |
982 | process the directive, otherwise back up. */ | |
983 | token = _cpp_lex_direct (pfile); | |
984 | if (token->type == CPP_HASH) | |
985 | { | |
986 | token1 = _cpp_lex_direct (pfile); | |
987 | _cpp_backup_tokens (pfile, 1); | |
988 | ||
989 | /* If it's a #line directive, handle it. */ | |
990 | if (token1->type == CPP_NUMBER) | |
991 | { | |
992 | _cpp_handle_directive (pfile, token->flags & PREV_WHITE); | |
993 | return; | |
994 | } | |
995 | } | |
996 | ||
997 | /* Backup as if nothing happened. */ | |
998 | _cpp_backup_tokens (pfile, 1); | |
999 | } | |
1000 | ||
1001 | /* Handle pending command line options: -D, -U, -A, -imacros and | |
1002 | -include. This should be called after debugging has been properly | |
1003 | set up in the front ends. */ | |
1004 | void | |
1005 | cpp_finish_options (pfile) | |
1006 | cpp_reader *pfile; | |
1007 | { | |
d7bc7a98 NB |
1008 | /* Install builtins and process command line macros etc. in the order |
1009 | they appeared, but only if not already preprocessed. */ | |
05e81724 | 1010 | if (! CPP_OPTION (pfile, preprocessed)) |
6de1e2a9 | 1011 | { |
d7bc7a98 NB |
1012 | struct pending_option *p; |
1013 | ||
b0287a90 | 1014 | _cpp_do_file_change (pfile, LC_RENAME, _("<built-in>"), 1, 0); |
d7bc7a98 NB |
1015 | init_builtins (pfile); |
1016 | _cpp_do_file_change (pfile, LC_RENAME, _("<command line>"), 1, 0); | |
1017 | for (p = CPP_OPTION (pfile, pending)->directive_head; p; p = p->next) | |
05e81724 | 1018 | (*p->handler) (pfile, p->arg); |
d7bc7a98 | 1019 | |
af0d16cd NB |
1020 | /* Scan -imacros files after -D, -U, but before -include. |
1021 | pfile->next_include_file is NULL, so _cpp_pop_buffer does not | |
1022 | push -include files. */ | |
1023 | for (p = CPP_OPTION (pfile, pending)->imacros_head; p; p = p->next) | |
1024 | if (push_include (pfile, p)) | |
1025 | cpp_scan_nooutput (pfile); | |
1026 | ||
1027 | pfile->next_include_file = &CPP_OPTION (pfile, pending)->include_head; | |
1028 | _cpp_maybe_push_include_file (pfile); | |
6de1e2a9 | 1029 | } |
05e81724 | 1030 | |
af0d16cd | 1031 | free_chain (CPP_OPTION (pfile, pending)->imacros_head); |
d7bc7a98 | 1032 | free_chain (CPP_OPTION (pfile, pending)->directive_head); |
d7bc7a98 | 1033 | } |
6de1e2a9 | 1034 | |
af0d16cd NB |
1035 | /* Push the next buffer on the stack given by -include, if any. */ |
1036 | void | |
1037 | _cpp_maybe_push_include_file (pfile) | |
d7bc7a98 NB |
1038 | cpp_reader *pfile; |
1039 | { | |
af0d16cd | 1040 | if (pfile->next_include_file) |
d7bc7a98 | 1041 | { |
af0d16cd NB |
1042 | struct pending_option *head = *pfile->next_include_file; |
1043 | ||
1044 | while (head && !push_include (pfile, head)) | |
1045 | head = head->next; | |
d7bc7a98 | 1046 | |
af0d16cd NB |
1047 | if (head) |
1048 | pfile->next_include_file = &head->next; | |
1049 | else | |
d7bc7a98 | 1050 | { |
af0d16cd NB |
1051 | /* All done; restore the line map from <command line>. */ |
1052 | _cpp_do_file_change (pfile, LC_RENAME, | |
1053 | pfile->line_maps.maps[0].to_file, 1, 0); | |
1054 | /* Don't come back here again. */ | |
1055 | pfile->next_include_file = NULL; | |
d7bc7a98 NB |
1056 | } |
1057 | } | |
6de1e2a9 ZW |
1058 | } |
1059 | ||
2f638f96 | 1060 | /* Use mkdeps.c to output dependency information. */ |
7ca3d2b1 NB |
1061 | static void |
1062 | output_deps (pfile) | |
1063 | cpp_reader *pfile; | |
1064 | { | |
1065 | /* Stream on which to print the dependency information. */ | |
1066 | FILE *deps_stream = 0; | |
27c38fbe KG |
1067 | const char *const deps_mode = |
1068 | CPP_OPTION (pfile, print_deps_append) ? "a" : "w"; | |
7ca3d2b1 | 1069 | |
56cd5b95 | 1070 | if (CPP_OPTION (pfile, deps_file)[0] == '\0') |
7ca3d2b1 NB |
1071 | deps_stream = stdout; |
1072 | else | |
1073 | { | |
1074 | deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode); | |
1075 | if (deps_stream == 0) | |
1076 | { | |
ebef4e8c | 1077 | cpp_errno (pfile, DL_ERROR, CPP_OPTION (pfile, deps_file)); |
7ca3d2b1 NB |
1078 | return; |
1079 | } | |
1080 | } | |
1081 | ||
1082 | deps_write (pfile->deps, deps_stream, 72); | |
1083 | ||
1084 | if (CPP_OPTION (pfile, deps_phony_targets)) | |
1085 | deps_phony_targets (pfile->deps, deps_stream); | |
1086 | ||
1087 | /* Don't close stdout. */ | |
ab8e2228 | 1088 | if (deps_stream != stdout) |
7ca3d2b1 NB |
1089 | { |
1090 | if (ferror (deps_stream) || fclose (deps_stream) != 0) | |
ebef4e8c | 1091 | cpp_error (pfile, DL_FATAL, "I/O error on output"); |
7ca3d2b1 NB |
1092 | } |
1093 | } | |
1094 | ||
6de1e2a9 ZW |
1095 | /* This is called at the end of preprocessing. It pops the |
1096 | last buffer and writes dependency output. It should also | |
1097 | clear macro definitions, such that you could call cpp_start_read | |
4a58aab6 | 1098 | with a new filename to restart processing. */ |
6de1e2a9 | 1099 | void |
93c80368 | 1100 | cpp_finish (pfile) |
6de1e2a9 ZW |
1101 | cpp_reader *pfile; |
1102 | { | |
7364fdd8 NB |
1103 | /* cpplex.c leaves the final buffer on the stack. This it so that |
1104 | it returns an unending stream of CPP_EOFs to the client. If we | |
a1f300c0 | 1105 | popped the buffer, we'd dereference a NULL buffer pointer and |
7364fdd8 NB |
1106 | segfault. It's nice to allow the client to do worry-free excess |
1107 | cpp_get_token calls. */ | |
1108 | while (pfile->buffer) | |
1109 | _cpp_pop_buffer (pfile); | |
c1212d2f | 1110 | |
49e6c08e | 1111 | /* Don't write the deps file if preprocessing has failed. */ |
ae79697b | 1112 | if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0) |
7ca3d2b1 | 1113 | output_deps (pfile); |
3caee4a8 | 1114 | |
d4506961 ZW |
1115 | /* Report on headers that could use multiple include guards. */ |
1116 | if (CPP_OPTION (pfile, print_include_names)) | |
c71f835b | 1117 | _cpp_report_missing_guards (pfile); |
6de1e2a9 ZW |
1118 | } |
1119 | ||
5d8ebbd8 | 1120 | /* Add a directive to be handled later in the initialization phase. */ |
223dca6a | 1121 | static void |
ae79697b ZW |
1122 | new_pending_directive (pend, text, handler) |
1123 | struct cpp_pending *pend; | |
223dca6a | 1124 | const char *text; |
40eac643 | 1125 | cl_directive_handler handler; |
223dca6a RH |
1126 | { |
1127 | struct pending_option *o = (struct pending_option *) | |
1128 | xmalloc (sizeof (struct pending_option)); | |
1129 | ||
7ceb3598 | 1130 | o->arg = text; |
223dca6a | 1131 | o->next = NULL; |
40eac643 | 1132 | o->handler = handler; |
ae79697b | 1133 | APPEND (pend, directive, o); |
223dca6a RH |
1134 | } |
1135 | ||
ae79697b ZW |
1136 | /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string"); |
1137 | I.e. a const string initializer with parens around it. That is | |
1138 | what N_("string") resolves to, so we make no_* be macros instead. */ | |
c725bd79 NB |
1139 | #define no_arg N_("argument missing after %s") |
1140 | #define no_ass N_("assertion missing after %s") | |
1141 | #define no_dir N_("directory name missing after %s") | |
1142 | #define no_fil N_("file name missing after %s") | |
1143 | #define no_mac N_("macro name missing after %s") | |
1144 | #define no_pth N_("path name missing after %s") | |
1145 | #define no_num N_("number missing after %s") | |
1146 | #define no_tgt N_("target missing after %s") | |
ae79697b ZW |
1147 | |
1148 | /* This is the list of all command line options, with the leading | |
1149 | "-" removed. It must be sorted in ASCII collating order. */ | |
1150 | #define COMMAND_LINE_OPTIONS \ | |
ae79697b ZW |
1151 | DEF_OPT("$", 0, OPT_dollar) \ |
1152 | DEF_OPT("+", 0, OPT_plus) \ | |
1153 | DEF_OPT("-help", 0, OPT__help) \ | |
91606ce2 | 1154 | DEF_OPT("-target-help", 0, OPT_target__help) \ |
ae79697b ZW |
1155 | DEF_OPT("-version", 0, OPT__version) \ |
1156 | DEF_OPT("A", no_ass, OPT_A) \ | |
1157 | DEF_OPT("C", 0, OPT_C) \ | |
477cdac7 | 1158 | DEF_OPT("CC", 0, OPT_CC) \ |
ae79697b ZW |
1159 | DEF_OPT("D", no_mac, OPT_D) \ |
1160 | DEF_OPT("H", 0, OPT_H) \ | |
1161 | DEF_OPT("I", no_dir, OPT_I) \ | |
1162 | DEF_OPT("M", 0, OPT_M) \ | |
b3124fac | 1163 | DEF_OPT("MD", no_fil, OPT_MD) \ |
96302433 | 1164 | DEF_OPT("MF", no_fil, OPT_MF) \ |
ae79697b ZW |
1165 | DEF_OPT("MG", 0, OPT_MG) \ |
1166 | DEF_OPT("MM", 0, OPT_MM) \ | |
b3124fac | 1167 | DEF_OPT("MMD", no_fil, OPT_MMD) \ |
a5a4ce3c | 1168 | DEF_OPT("MP", 0, OPT_MP) \ |
f7114e17 | 1169 | DEF_OPT("MQ", no_tgt, OPT_MQ) \ |
03b9ab42 | 1170 | DEF_OPT("MT", no_tgt, OPT_MT) \ |
ae79697b ZW |
1171 | DEF_OPT("P", 0, OPT_P) \ |
1172 | DEF_OPT("U", no_mac, OPT_U) \ | |
1173 | DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \ | |
1174 | DEF_OPT("d", no_arg, OPT_d) \ | |
1175 | DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \ | |
1176 | DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \ | |
be768055 | 1177 | DEF_OPT("fno-operator-names", 0, OPT_fno_operator_names) \ |
ae79697b ZW |
1178 | DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \ |
1179 | DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \ | |
1180 | DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \ | |
1181 | DEF_OPT("fshow-column", 0, OPT_fshow_column) \ | |
0fef3fd0 | 1182 | DEF_OPT("fsigned-char", 0, OPT_fsigned_char) \ |
6ab3e7dd | 1183 | DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \ |
0fef3fd0 | 1184 | DEF_OPT("funsigned-char", 0, OPT_funsigned_char) \ |
ae79697b ZW |
1185 | DEF_OPT("h", 0, OPT_h) \ |
1186 | DEF_OPT("idirafter", no_dir, OPT_idirafter) \ | |
1187 | DEF_OPT("imacros", no_fil, OPT_imacros) \ | |
1188 | DEF_OPT("include", no_fil, OPT_include) \ | |
1189 | DEF_OPT("iprefix", no_pth, OPT_iprefix) \ | |
1190 | DEF_OPT("isystem", no_dir, OPT_isystem) \ | |
1191 | DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \ | |
1192 | DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \ | |
1193 | DEF_OPT("lang-asm", 0, OPT_lang_asm) \ | |
1194 | DEF_OPT("lang-c", 0, OPT_lang_c) \ | |
1195 | DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \ | |
1196 | DEF_OPT("lang-c89", 0, OPT_lang_c89) \ | |
ae79697b ZW |
1197 | DEF_OPT("lang-objc", 0, OPT_lang_objc) \ |
1198 | DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \ | |
1199 | DEF_OPT("nostdinc", 0, OPT_nostdinc) \ | |
1200 | DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \ | |
1201 | DEF_OPT("o", no_fil, OPT_o) \ | |
1202 | DEF_OPT("pedantic", 0, OPT_pedantic) \ | |
1203 | DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \ | |
1204 | DEF_OPT("remap", 0, OPT_remap) \ | |
dd07b884 | 1205 | DEF_OPT("std=c++98", 0, OPT_std_cplusplus98) \ |
ae79697b ZW |
1206 | DEF_OPT("std=c89", 0, OPT_std_c89) \ |
1207 | DEF_OPT("std=c99", 0, OPT_std_c99) \ | |
1208 | DEF_OPT("std=c9x", 0, OPT_std_c9x) \ | |
1209 | DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \ | |
1210 | DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \ | |
1211 | DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \ | |
1212 | DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \ | |
1213 | DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \ | |
1214 | DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \ | |
1215 | DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \ | |
ae79697b ZW |
1216 | DEF_OPT("trigraphs", 0, OPT_trigraphs) \ |
1217 | DEF_OPT("v", 0, OPT_v) \ | |
f4cdc368 | 1218 | DEF_OPT("version", 0, OPT_version) \ |
ae79697b ZW |
1219 | DEF_OPT("w", 0, OPT_w) |
1220 | ||
1221 | #define DEF_OPT(text, msg, code) code, | |
e23c0ba3 ZW |
1222 | enum opt_code |
1223 | { | |
ae79697b | 1224 | COMMAND_LINE_OPTIONS |
e23c0ba3 ZW |
1225 | N_OPTS |
1226 | }; | |
ae79697b | 1227 | #undef DEF_OPT |
e23c0ba3 ZW |
1228 | |
1229 | struct cl_option | |
1230 | { | |
1231 | const char *opt_text; | |
1232 | const char *msg; | |
1233 | size_t opt_len; | |
1234 | enum opt_code opt_code; | |
1235 | }; | |
1236 | ||
ae79697b | 1237 | #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code }, |
e23c0ba3 ZW |
1238 | #ifdef HOST_EBCDIC |
1239 | static struct cl_option cl_options[] = | |
1240 | #else | |
1241 | static const struct cl_option cl_options[] = | |
1242 | #endif | |
1243 | { | |
ae79697b | 1244 | COMMAND_LINE_OPTIONS |
e23c0ba3 ZW |
1245 | }; |
1246 | #undef DEF_OPT | |
ae79697b | 1247 | #undef COMMAND_LINE_OPTIONS |
e23c0ba3 ZW |
1248 | |
1249 | /* Perform a binary search to find which, if any, option the given | |
1250 | command-line matches. Returns its index in the option array, | |
1251 | negative on failure. Complications arise since some options can be | |
1252 | suffixed with an argument, and multiple complete matches can occur, | |
05e81724 NB |
1253 | e.g. -iwithprefix and -iwithprefixbefore. Moreover, we need to |
1254 | accept options beginning with -W that we do not recognise, but not | |
1255 | to swallow any subsequent command line argument; this is handled as | |
1256 | special cases in cpp_handle_option. */ | |
e23c0ba3 ZW |
1257 | static int |
1258 | parse_option (input) | |
1259 | const char *input; | |
1260 | { | |
1261 | unsigned int md, mn, mx; | |
1262 | size_t opt_len; | |
1263 | int comp; | |
1264 | ||
1265 | mn = 0; | |
1266 | mx = N_OPTS; | |
1267 | ||
1268 | while (mx > mn) | |
1269 | { | |
1270 | md = (mn + mx) / 2; | |
ae79697b | 1271 | |
e23c0ba3 | 1272 | opt_len = cl_options[md].opt_len; |
61d0346d | 1273 | comp = memcmp (input, cl_options[md].opt_text, opt_len); |
ae79697b | 1274 | |
e23c0ba3 ZW |
1275 | if (comp > 0) |
1276 | mn = md + 1; | |
1277 | else if (comp < 0) | |
1278 | mx = md; | |
1279 | else | |
1280 | { | |
1281 | if (input[opt_len] == '\0') | |
1282 | return md; | |
1283 | /* We were passed more text. If the option takes an argument, | |
1284 | we may match a later option or we may have been passed the | |
1285 | argument. The longest possible option match succeeds. | |
1286 | If the option takes no arguments we have not matched and | |
4a58aab6 | 1287 | continue the search (e.g. input="stdc++" match was "stdc"). */ |
e23c0ba3 ZW |
1288 | mn = md + 1; |
1289 | if (cl_options[md].msg) | |
1290 | { | |
1291 | /* Scan forwards. If we get an exact match, return it. | |
1292 | Otherwise, return the longest option-accepting match. | |
4a58aab6 | 1293 | This loops no more than twice with current options. */ |
e23c0ba3 | 1294 | mx = md; |
37b8524c | 1295 | for (; mn < (unsigned int) N_OPTS; mn++) |
e23c0ba3 ZW |
1296 | { |
1297 | opt_len = cl_options[mn].opt_len; | |
61d0346d | 1298 | if (memcmp (input, cl_options[mn].opt_text, opt_len)) |
e23c0ba3 ZW |
1299 | break; |
1300 | if (input[opt_len] == '\0') | |
1301 | return mn; | |
1302 | if (cl_options[mn].msg) | |
1303 | mx = mn; | |
1304 | } | |
1305 | return mx; | |
1306 | } | |
1307 | } | |
1308 | } | |
1309 | ||
1310 | return -1; | |
1311 | } | |
1312 | ||
6de1e2a9 ZW |
1313 | /* Handle one command-line option in (argc, argv). |
1314 | Can be called multiple times, to handle multiple sets of options. | |
ffdeea47 | 1315 | If ignore is non-zero, this will ignore unrecognized -W* options. |
6de1e2a9 | 1316 | Returns number of strings consumed. */ |
2c0accc9 | 1317 | int |
ffdeea47 | 1318 | cpp_handle_option (pfile, argc, argv, ignore) |
6de1e2a9 ZW |
1319 | cpp_reader *pfile; |
1320 | int argc; | |
1321 | char **argv; | |
ffdeea47 | 1322 | int ignore; |
6de1e2a9 | 1323 | { |
6de1e2a9 | 1324 | int i = 0; |
f8f769ea | 1325 | struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
6de1e2a9 | 1326 | |
373e2177 NB |
1327 | /* Interpret "-" or a non-option as a file name. */ |
1328 | if (argv[i][0] != '-' || argv[i][1] == '\0') | |
0b22d65c | 1329 | { |
373e2177 NB |
1330 | if (CPP_OPTION (pfile, in_fname) == NULL) |
1331 | CPP_OPTION (pfile, in_fname) = argv[i]; | |
1332 | else if (CPP_OPTION (pfile, out_fname) == NULL) | |
ae79697b | 1333 | CPP_OPTION (pfile, out_fname) = argv[i]; |
0b22d65c | 1334 | else |
ebef4e8c NB |
1335 | cpp_error (pfile, DL_FATAL, |
1336 | "too many filenames. Type %s --help for usage info", | |
373e2177 | 1337 | progname); |
0b22d65c ZW |
1338 | } |
1339 | else | |
e23c0ba3 ZW |
1340 | { |
1341 | enum opt_code opt_code; | |
1342 | int opt_index; | |
7ceb3598 | 1343 | const char *arg = 0; |
e23c0ba3 | 1344 | |
4a58aab6 | 1345 | /* Skip over '-'. */ |
e23c0ba3 ZW |
1346 | opt_index = parse_option (&argv[i][1]); |
1347 | if (opt_index < 0) | |
1348 | return i; | |
1349 | ||
1350 | opt_code = cl_options[opt_index].opt_code; | |
1351 | if (cl_options[opt_index].msg) | |
1352 | { | |
1353 | arg = &argv[i][cl_options[opt_index].opt_len + 1]; | |
1354 | ||
5c5d1ea0 | 1355 | /* Yuk. Special case for -W as it must not swallow |
e23c0ba3 | 1356 | up any following argument. If this becomes common, add |
4a58aab6 | 1357 | another field to the cl_options table. */ |
5c5d1ea0 | 1358 | if (arg[0] == '\0' && opt_code != OPT_W) |
e23c0ba3 ZW |
1359 | { |
1360 | arg = argv[++i]; | |
1361 | if (!arg) | |
1362 | { | |
ebef4e8c NB |
1363 | cpp_error (pfile, DL_FATAL, |
1364 | cl_options[opt_index].msg, argv[i - 1]); | |
e23c0ba3 ZW |
1365 | return argc; |
1366 | } | |
1367 | } | |
1368 | } | |
ae79697b | 1369 | |
e23c0ba3 ZW |
1370 | switch (opt_code) |
1371 | { | |
4a58aab6 | 1372 | case N_OPTS: /* Shut GCC up. */ |
e23c0ba3 ZW |
1373 | break; |
1374 | case OPT_fleading_underscore: | |
771c4df3 | 1375 | CPP_OPTION (pfile, user_label_prefix) = "_"; |
e23c0ba3 ZW |
1376 | break; |
1377 | case OPT_fno_leading_underscore: | |
771c4df3 | 1378 | CPP_OPTION (pfile, user_label_prefix) = ""; |
e23c0ba3 | 1379 | break; |
be768055 JJ |
1380 | case OPT_fno_operator_names: |
1381 | CPP_OPTION (pfile, operator_names) = 0; | |
1382 | break; | |
e23c0ba3 | 1383 | case OPT_fpreprocessed: |
ae79697b | 1384 | CPP_OPTION (pfile, preprocessed) = 1; |
e23c0ba3 ZW |
1385 | break; |
1386 | case OPT_fno_preprocessed: | |
ae79697b ZW |
1387 | CPP_OPTION (pfile, preprocessed) = 0; |
1388 | break; | |
1389 | case OPT_fshow_column: | |
1390 | CPP_OPTION (pfile, show_column) = 1; | |
1391 | break; | |
1392 | case OPT_fno_show_column: | |
1393 | CPP_OPTION (pfile, show_column) = 0; | |
e23c0ba3 | 1394 | break; |
0fef3fd0 NB |
1395 | case OPT_fsigned_char: |
1396 | CPP_OPTION (pfile, signed_char) = 1; | |
1397 | break; | |
1398 | case OPT_funsigned_char: | |
1399 | CPP_OPTION (pfile, signed_char) = 0; | |
1400 | break; | |
6ab3e7dd NB |
1401 | case OPT_ftabstop: |
1402 | /* Silently ignore empty string, non-longs and silly values. */ | |
1403 | if (arg[0] != '\0') | |
1404 | { | |
1405 | char *endptr; | |
1406 | long tabstop = strtol (arg, &endptr, 10); | |
1407 | if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100) | |
1408 | CPP_OPTION (pfile, tabstop) = tabstop; | |
1409 | } | |
1410 | break; | |
e23c0ba3 | 1411 | case OPT_w: |
ae79697b | 1412 | CPP_OPTION (pfile, inhibit_warnings) = 1; |
e23c0ba3 | 1413 | break; |
e23c0ba3 ZW |
1414 | case OPT_h: |
1415 | case OPT__help: | |
1416 | print_help (); | |
7e96d768 | 1417 | CPP_OPTION (pfile, help_only) = 1; |
e23c0ba3 | 1418 | break; |
91606ce2 | 1419 | case OPT_target__help: |
f4cdc368 ZW |
1420 | /* Print if any target specific options. cpplib has none, but |
1421 | make sure help_only gets set. */ | |
7e96d768 | 1422 | CPP_OPTION (pfile, help_only) = 1; |
91606ce2 | 1423 | break; |
f4cdc368 ZW |
1424 | |
1425 | /* --version inhibits compilation, -version doesn't. -v means | |
1426 | verbose and -version. Historical reasons, don't ask. */ | |
e23c0ba3 | 1427 | case OPT__version: |
7e96d768 | 1428 | CPP_OPTION (pfile, help_only) = 1; |
cb773845 ZW |
1429 | pfile->print_version = 1; |
1430 | break; | |
f4cdc368 ZW |
1431 | case OPT_v: |
1432 | CPP_OPTION (pfile, verbose) = 1; | |
cb773845 ZW |
1433 | pfile->print_version = 1; |
1434 | break; | |
f4cdc368 | 1435 | case OPT_version: |
cb773845 | 1436 | pfile->print_version = 1; |
e23c0ba3 | 1437 | break; |
f4cdc368 | 1438 | |
e23c0ba3 | 1439 | case OPT_C: |
ae79697b | 1440 | CPP_OPTION (pfile, discard_comments) = 0; |
e23c0ba3 | 1441 | break; |
477cdac7 JT |
1442 | case OPT_CC: |
1443 | CPP_OPTION (pfile, discard_comments) = 0; | |
1444 | CPP_OPTION (pfile, discard_comments_in_macro_exp) = 0; | |
1445 | break; | |
e23c0ba3 | 1446 | case OPT_P: |
ae79697b | 1447 | CPP_OPTION (pfile, no_line_commands) = 1; |
e23c0ba3 | 1448 | break; |
4a58aab6 | 1449 | case OPT_dollar: /* Don't include $ in identifiers. */ |
ae79697b | 1450 | CPP_OPTION (pfile, dollars_in_ident) = 0; |
e23c0ba3 ZW |
1451 | break; |
1452 | case OPT_H: | |
ae79697b | 1453 | CPP_OPTION (pfile, print_include_names) = 1; |
e23c0ba3 ZW |
1454 | break; |
1455 | case OPT_D: | |
f8f769ea | 1456 | new_pending_directive (pend, arg, cpp_define); |
e23c0ba3 ZW |
1457 | break; |
1458 | case OPT_pedantic_errors: | |
ae79697b | 1459 | CPP_OPTION (pfile, pedantic_errors) = 1; |
e23c0ba3 ZW |
1460 | /* fall through */ |
1461 | case OPT_pedantic: | |
ae79697b | 1462 | CPP_OPTION (pfile, pedantic) = 1; |
2784528c | 1463 | CPP_OPTION (pfile, warn_endif_labels) = 1; |
e23c0ba3 | 1464 | break; |
e23c0ba3 | 1465 | case OPT_trigraphs: |
ae79697b | 1466 | CPP_OPTION (pfile, trigraphs) = 1; |
e23c0ba3 ZW |
1467 | break; |
1468 | case OPT_plus: | |
ae79697b ZW |
1469 | CPP_OPTION (pfile, cplusplus) = 1; |
1470 | CPP_OPTION (pfile, cplusplus_comments) = 1; | |
e23c0ba3 ZW |
1471 | break; |
1472 | case OPT_remap: | |
ae79697b | 1473 | CPP_OPTION (pfile, remap) = 1; |
e23c0ba3 ZW |
1474 | break; |
1475 | case OPT_iprefix: | |
ae79697b ZW |
1476 | CPP_OPTION (pfile, include_prefix) = arg; |
1477 | CPP_OPTION (pfile, include_prefix_len) = strlen (arg); | |
e23c0ba3 ZW |
1478 | break; |
1479 | case OPT_lang_c: | |
dd07b884 | 1480 | set_lang (pfile, CLK_GNUC89); |
e23c0ba3 | 1481 | break; |
e23c0ba3 | 1482 | case OPT_lang_cplusplus: |
dd07b884 | 1483 | set_lang (pfile, CLK_GNUCXX); |
e23c0ba3 | 1484 | break; |
f8f769ea | 1485 | case OPT_lang_objc: |
dd07b884 | 1486 | set_lang (pfile, CLK_OBJC); |
e23c0ba3 | 1487 | break; |
dd07b884 NB |
1488 | case OPT_lang_objcplusplus: |
1489 | set_lang (pfile, CLK_OBJCXX); | |
e23c0ba3 | 1490 | break; |
dd07b884 NB |
1491 | case OPT_lang_asm: |
1492 | set_lang (pfile, CLK_ASM); | |
e23c0ba3 | 1493 | break; |
dd07b884 NB |
1494 | case OPT_std_cplusplus98: |
1495 | set_lang (pfile, CLK_CXX98); | |
e23c0ba3 ZW |
1496 | break; |
1497 | case OPT_std_gnu89: | |
dd07b884 | 1498 | set_lang (pfile, CLK_GNUC89); |
e23c0ba3 ZW |
1499 | break; |
1500 | case OPT_std_gnu9x: | |
1501 | case OPT_std_gnu99: | |
dd07b884 | 1502 | set_lang (pfile, CLK_GNUC99); |
e23c0ba3 ZW |
1503 | break; |
1504 | case OPT_std_iso9899_199409: | |
dd07b884 NB |
1505 | set_lang (pfile, CLK_STDC94); |
1506 | break; | |
e23c0ba3 ZW |
1507 | case OPT_std_iso9899_1990: |
1508 | case OPT_std_c89: | |
9b55f29a | 1509 | case OPT_lang_c89: |
dd07b884 | 1510 | set_lang (pfile, CLK_STDC89); |
e23c0ba3 ZW |
1511 | break; |
1512 | case OPT_std_iso9899_199x: | |
1513 | case OPT_std_iso9899_1999: | |
1514 | case OPT_std_c9x: | |
1515 | case OPT_std_c99: | |
dd07b884 NB |
1516 | set_lang (pfile, CLK_STDC99); |
1517 | break; | |
1518 | case OPT_nostdinc: | |
1519 | /* -nostdinc causes no default include directories. | |
1520 | You must specify all include-file directories with -I. */ | |
1521 | CPP_OPTION (pfile, no_standard_includes) = 1; | |
1522 | break; | |
1523 | case OPT_nostdincplusplus: | |
ec5c56db | 1524 | /* -nostdinc++ causes no default C++-specific include directories. */ |
dd07b884 | 1525 | CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1; |
e23c0ba3 ZW |
1526 | break; |
1527 | case OPT_o: | |
373e2177 NB |
1528 | if (CPP_OPTION (pfile, out_fname) == NULL) |
1529 | CPP_OPTION (pfile, out_fname) = arg; | |
1530 | else | |
0b22d65c | 1531 | { |
ebef4e8c | 1532 | cpp_error (pfile, DL_FATAL, "output filename specified twice"); |
e23c0ba3 ZW |
1533 | return argc; |
1534 | } | |
e23c0ba3 ZW |
1535 | break; |
1536 | case OPT_d: | |
1537 | /* Args to -d specify what parts of macros to dump. | |
1538 | Silently ignore unrecognised options; they may | |
4a58aab6 | 1539 | be aimed at the compiler proper. */ |
e23c0ba3 ZW |
1540 | { |
1541 | char c; | |
ae79697b | 1542 | |
e23c0ba3 ZW |
1543 | while ((c = *arg++) != '\0') |
1544 | switch (c) | |
1545 | { | |
1546 | case 'M': | |
ae79697b ZW |
1547 | CPP_OPTION (pfile, dump_macros) = dump_only; |
1548 | CPP_OPTION (pfile, no_output) = 1; | |
0b22d65c ZW |
1549 | break; |
1550 | case 'N': | |
ae79697b | 1551 | CPP_OPTION (pfile, dump_macros) = dump_names; |
0b22d65c ZW |
1552 | break; |
1553 | case 'D': | |
ae79697b | 1554 | CPP_OPTION (pfile, dump_macros) = dump_definitions; |
0b22d65c ZW |
1555 | break; |
1556 | case 'I': | |
ae79697b | 1557 | CPP_OPTION (pfile, dump_includes) = 1; |
0b22d65c ZW |
1558 | break; |
1559 | } | |
e23c0ba3 ZW |
1560 | } |
1561 | break; | |
96302433 | 1562 | |
e23c0ba3 | 1563 | case OPT_MG: |
ae79697b | 1564 | CPP_OPTION (pfile, print_deps_missing_files) = 1; |
e23c0ba3 ZW |
1565 | break; |
1566 | case OPT_M: | |
3ddbb8a9 NB |
1567 | /* When doing dependencies with -M or -MM, suppress normal |
1568 | preprocessed output, but still do -dM etc. as software | |
1569 | depends on this. Preprocessed output occurs if -MD, -MMD | |
1570 | or environment var dependency generation is used. */ | |
96302433 | 1571 | CPP_OPTION (pfile, print_deps) = 2; |
3ddbb8a9 | 1572 | CPP_OPTION (pfile, no_output) = 1; |
96302433 | 1573 | break; |
e23c0ba3 | 1574 | case OPT_MM: |
96302433 | 1575 | CPP_OPTION (pfile, print_deps) = 1; |
3ddbb8a9 | 1576 | CPP_OPTION (pfile, no_output) = 1; |
e23c0ba3 | 1577 | break; |
96302433 NB |
1578 | case OPT_MF: |
1579 | CPP_OPTION (pfile, deps_file) = arg; | |
1580 | break; | |
1581 | case OPT_MP: | |
a5a4ce3c NB |
1582 | CPP_OPTION (pfile, deps_phony_targets) = 1; |
1583 | break; | |
f7114e17 | 1584 | case OPT_MQ: |
03b9ab42 | 1585 | case OPT_MT: |
f7114e17 NB |
1586 | /* Add a target. -MQ quotes for Make. */ |
1587 | deps_add_target (pfile->deps, arg, opt_code == OPT_MQ); | |
03b9ab42 NB |
1588 | break; |
1589 | ||
b3124fac NB |
1590 | case OPT_MD: |
1591 | CPP_OPTION (pfile, print_deps) = 2; | |
1592 | CPP_OPTION (pfile, deps_file) = arg; | |
1593 | break; | |
1594 | case OPT_MMD: | |
1595 | CPP_OPTION (pfile, print_deps) = 1; | |
1596 | CPP_OPTION (pfile, deps_file) = arg; | |
1597 | break; | |
1598 | ||
e23c0ba3 | 1599 | case OPT_A: |
e1e97c4f | 1600 | if (arg[0] == '-') |
0b22d65c | 1601 | { |
e1e97c4f NB |
1602 | /* -A with an argument beginning with '-' acts as |
1603 | #unassert on whatever immediately follows the '-'. | |
1604 | If "-" is the whole argument, we eliminate all | |
1605 | predefined macros and assertions, including those | |
1606 | that were specified earlier on the command line. | |
1607 | That way we can get rid of any that were passed | |
1608 | automatically in from GCC. */ | |
1609 | ||
1610 | if (arg[1] == '\0') | |
0b22d65c | 1611 | { |
29401c30 | 1612 | free_chain (pend->directive_head); |
e33f6253 NB |
1613 | pend->directive_head = NULL; |
1614 | pend->directive_tail = NULL; | |
0b22d65c | 1615 | } |
e1e97c4f | 1616 | else |
e33f6253 | 1617 | new_pending_directive (pend, arg + 1, cpp_unassert); |
6de1e2a9 | 1618 | } |
e1e97c4f | 1619 | else |
e33f6253 | 1620 | new_pending_directive (pend, arg, cpp_assert); |
e23c0ba3 ZW |
1621 | break; |
1622 | case OPT_U: | |
e33f6253 | 1623 | new_pending_directive (pend, arg, cpp_undef); |
e23c0ba3 ZW |
1624 | break; |
1625 | case OPT_I: /* Add directory to path for includes. */ | |
1626 | if (!strcmp (arg, "-")) | |
1627 | { | |
1628 | /* -I- means: | |
1629 | Use the preceding -I directories for #include "..." | |
1630 | but not #include <...>. | |
1631 | Don't search the directory of the present file | |
1632 | for #include "...". (Note that -I. -I- is not the same as | |
1633 | the default setup; -I. uses the compiler's working dir.) */ | |
ae79697b | 1634 | if (! CPP_OPTION (pfile, ignore_srcdir)) |
e23c0ba3 | 1635 | { |
ae79697b ZW |
1636 | pend->quote_head = pend->brack_head; |
1637 | pend->quote_tail = pend->brack_tail; | |
1638 | pend->brack_head = 0; | |
1639 | pend->brack_tail = 0; | |
1640 | CPP_OPTION (pfile, ignore_srcdir) = 1; | |
e23c0ba3 ZW |
1641 | } |
1642 | else | |
1643 | { | |
ebef4e8c | 1644 | cpp_error (pfile, DL_FATAL, "-I- specified twice"); |
e23c0ba3 ZW |
1645 | return argc; |
1646 | } | |
1647 | } | |
1648 | else | |
e33f6253 | 1649 | append_include_chain (pfile, xstrdup (arg), BRACKET, 0); |
e23c0ba3 ZW |
1650 | break; |
1651 | case OPT_isystem: | |
1652 | /* Add directory to beginning of system include path, as a system | |
4a58aab6 | 1653 | include directory. */ |
e33f6253 | 1654 | append_include_chain (pfile, xstrdup (arg), SYSTEM, 0); |
e23c0ba3 ZW |
1655 | break; |
1656 | case OPT_include: | |
e23c0ba3 ZW |
1657 | case OPT_imacros: |
1658 | { | |
1659 | struct pending_option *o = (struct pending_option *) | |
1660 | xmalloc (sizeof (struct pending_option)); | |
1661 | o->arg = arg; | |
1662 | o->next = NULL; | |
ae79697b | 1663 | |
d7bc7a98 NB |
1664 | if (opt_code == OPT_include) |
1665 | APPEND (pend, include, o); | |
1666 | else | |
1667 | APPEND (pend, imacros, o); | |
e23c0ba3 ZW |
1668 | } |
1669 | break; | |
1670 | case OPT_iwithprefix: | |
1671 | /* Add directory to end of path for includes, | |
1672 | with the default prefix at the front of its name. */ | |
1673 | /* fall through */ | |
1674 | case OPT_iwithprefixbefore: | |
1675 | /* Add directory to main path for includes, | |
1676 | with the default prefix at the front of its name. */ | |
1677 | { | |
1678 | char *fname; | |
1679 | int len; | |
ae79697b | 1680 | |
e23c0ba3 | 1681 | len = strlen (arg); |
ae79697b ZW |
1682 | |
1683 | if (CPP_OPTION (pfile, include_prefix) != 0) | |
e23c0ba3 | 1684 | { |
ae79697b ZW |
1685 | size_t ipl = CPP_OPTION (pfile, include_prefix_len); |
1686 | fname = xmalloc (ipl + len + 1); | |
1687 | memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl); | |
1688 | memcpy (fname + ipl, arg, len + 1); | |
e23c0ba3 | 1689 | } |
60893f43 | 1690 | else if (cpp_GCC_INCLUDE_DIR_len) |
e23c0ba3 | 1691 | { |
60893f43 ZW |
1692 | fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1); |
1693 | memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len); | |
1694 | memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1); | |
e23c0ba3 | 1695 | } |
60893f43 ZW |
1696 | else |
1697 | fname = xstrdup (arg); | |
ae79697b | 1698 | |
e33f6253 | 1699 | append_include_chain (pfile, fname, |
e23c0ba3 ZW |
1700 | opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0); |
1701 | } | |
1702 | break; | |
1703 | case OPT_idirafter: | |
1704 | /* Add directory to end of path for includes. */ | |
e33f6253 | 1705 | append_include_chain (pfile, xstrdup (arg), AFTER, 0); |
e23c0ba3 ZW |
1706 | break; |
1707 | case OPT_W: | |
4a58aab6 | 1708 | /* Silently ignore unrecognised options. */ |
e23c0ba3 | 1709 | if (!strcmp (argv[i], "-Wall")) |
0b22d65c | 1710 | { |
ae79697b ZW |
1711 | CPP_OPTION (pfile, warn_trigraphs) = 1; |
1712 | CPP_OPTION (pfile, warn_comments) = 1; | |
0b22d65c | 1713 | } |
e23c0ba3 | 1714 | else if (!strcmp (argv[i], "-Wtraditional")) |
07aa0b04 | 1715 | CPP_OPTION (pfile, warn_traditional) = 1; |
e23c0ba3 | 1716 | else if (!strcmp (argv[i], "-Wtrigraphs")) |
ae79697b | 1717 | CPP_OPTION (pfile, warn_trigraphs) = 1; |
e23c0ba3 | 1718 | else if (!strcmp (argv[i], "-Wcomment")) |
ae79697b | 1719 | CPP_OPTION (pfile, warn_comments) = 1; |
e23c0ba3 | 1720 | else if (!strcmp (argv[i], "-Wcomments")) |
ae79697b | 1721 | CPP_OPTION (pfile, warn_comments) = 1; |
e23c0ba3 | 1722 | else if (!strcmp (argv[i], "-Wundef")) |
ae79697b | 1723 | CPP_OPTION (pfile, warn_undef) = 1; |
e23c0ba3 | 1724 | else if (!strcmp (argv[i], "-Wimport")) |
ae79697b | 1725 | CPP_OPTION (pfile, warn_import) = 1; |
e23c0ba3 | 1726 | else if (!strcmp (argv[i], "-Werror")) |
ae79697b | 1727 | CPP_OPTION (pfile, warnings_are_errors) = 1; |
317639a8 BC |
1728 | else if (!strcmp (argv[i], "-Wsystem-headers")) |
1729 | CPP_OPTION (pfile, warn_system_headers) = 1; | |
909de5da PE |
1730 | else if (!strcmp (argv[i], "-Wendif-labels")) |
1731 | CPP_OPTION (pfile, warn_endif_labels) = 1; | |
e23c0ba3 | 1732 | else if (!strcmp (argv[i], "-Wno-traditional")) |
07aa0b04 | 1733 | CPP_OPTION (pfile, warn_traditional) = 0; |
e23c0ba3 | 1734 | else if (!strcmp (argv[i], "-Wno-trigraphs")) |
ae79697b | 1735 | CPP_OPTION (pfile, warn_trigraphs) = 0; |
e23c0ba3 | 1736 | else if (!strcmp (argv[i], "-Wno-comment")) |
ae79697b | 1737 | CPP_OPTION (pfile, warn_comments) = 0; |
e23c0ba3 | 1738 | else if (!strcmp (argv[i], "-Wno-comments")) |
ae79697b | 1739 | CPP_OPTION (pfile, warn_comments) = 0; |
e23c0ba3 | 1740 | else if (!strcmp (argv[i], "-Wno-undef")) |
ae79697b | 1741 | CPP_OPTION (pfile, warn_undef) = 0; |
e23c0ba3 | 1742 | else if (!strcmp (argv[i], "-Wno-import")) |
ae79697b | 1743 | CPP_OPTION (pfile, warn_import) = 0; |
e23c0ba3 | 1744 | else if (!strcmp (argv[i], "-Wno-error")) |
ae79697b | 1745 | CPP_OPTION (pfile, warnings_are_errors) = 0; |
317639a8 BC |
1746 | else if (!strcmp (argv[i], "-Wno-system-headers")) |
1747 | CPP_OPTION (pfile, warn_system_headers) = 0; | |
909de5da PE |
1748 | else if (!strcmp (argv[i], "-Wno-endif-labels")) |
1749 | CPP_OPTION (pfile, warn_endif_labels) = 0; | |
ffdeea47 JJ |
1750 | else if (! ignore) |
1751 | return i; | |
e23c0ba3 ZW |
1752 | break; |
1753 | } | |
1754 | } | |
6de1e2a9 | 1755 | return i + 1; |
e23c0ba3 | 1756 | } |
0b22d65c | 1757 | |
6de1e2a9 ZW |
1758 | /* Handle command-line options in (argc, argv). |
1759 | Can be called multiple times, to handle multiple sets of options. | |
1760 | Returns if an unrecognized option is seen. | |
1761 | Returns number of strings consumed. */ | |
6de1e2a9 ZW |
1762 | int |
1763 | cpp_handle_options (pfile, argc, argv) | |
1764 | cpp_reader *pfile; | |
1765 | int argc; | |
1766 | char **argv; | |
1767 | { | |
1768 | int i; | |
1769 | int strings_processed; | |
e23c0ba3 | 1770 | |
6de1e2a9 ZW |
1771 | for (i = 0; i < argc; i += strings_processed) |
1772 | { | |
ffdeea47 | 1773 | strings_processed = cpp_handle_option (pfile, argc - i, argv + i, 1); |
6de1e2a9 ZW |
1774 | if (strings_processed == 0) |
1775 | break; | |
1776 | } | |
96302433 | 1777 | |
6de1e2a9 ZW |
1778 | return i; |
1779 | } | |
1780 | ||
96302433 NB |
1781 | /* Extra processing when all options are parsed, after all calls to |
1782 | cpp_handle_option[s]. Consistency checks etc. */ | |
1783 | void | |
1784 | cpp_post_options (pfile) | |
1785 | cpp_reader *pfile; | |
1786 | { | |
cb773845 ZW |
1787 | if (pfile->print_version) |
1788 | { | |
1789 | fprintf (stderr, _("GNU CPP version %s (cpplib)"), version_string); | |
1790 | #ifdef TARGET_VERSION | |
1791 | TARGET_VERSION; | |
1792 | #endif | |
1793 | fputc ('\n', stderr); | |
1794 | } | |
1795 | ||
373e2177 NB |
1796 | /* Canonicalize in_fname and out_fname. We guarantee they are not |
1797 | NULL, and that the empty string represents stdin / stdout. */ | |
1798 | if (CPP_OPTION (pfile, in_fname) == NULL | |
1799 | || !strcmp (CPP_OPTION (pfile, in_fname), "-")) | |
1800 | CPP_OPTION (pfile, in_fname) = ""; | |
1801 | ||
1802 | if (CPP_OPTION (pfile, out_fname) == NULL | |
1803 | || !strcmp (CPP_OPTION (pfile, out_fname), "-")) | |
1804 | CPP_OPTION (pfile, out_fname) = ""; | |
1805 | ||
96302433 NB |
1806 | /* -Wtraditional is not useful in C++ mode. */ |
1807 | if (CPP_OPTION (pfile, cplusplus)) | |
1808 | CPP_OPTION (pfile, warn_traditional) = 0; | |
1809 | ||
ec5c56db | 1810 | /* Set this if it hasn't been set already. */ |
96302433 NB |
1811 | if (CPP_OPTION (pfile, user_label_prefix) == NULL) |
1812 | CPP_OPTION (pfile, user_label_prefix) = USER_LABEL_PREFIX; | |
1813 | ||
6d4587f7 ZW |
1814 | /* Permanently disable macro expansion if we are rescanning |
1815 | preprocessed text. */ | |
1816 | if (CPP_OPTION (pfile, preprocessed)) | |
1817 | pfile->state.prevent_expansion = 1; | |
1818 | ||
96302433 NB |
1819 | /* We need to do this after option processing and before |
1820 | cpp_start_read, as cppmain.c relies on the options->no_output to | |
1821 | set its callbacks correctly before calling cpp_start_read. */ | |
1822 | init_dependency_output (pfile); | |
1823 | ||
e582248c NB |
1824 | /* After checking the environment variables, check if -M or -MM has |
1825 | not been specified, but other -M options have. */ | |
1826 | if (CPP_OPTION (pfile, print_deps) == 0 && | |
1827 | (CPP_OPTION (pfile, print_deps_missing_files) | |
1828 | || CPP_OPTION (pfile, deps_file) | |
1829 | || CPP_OPTION (pfile, deps_phony_targets))) | |
ebef4e8c NB |
1830 | cpp_error (pfile, DL_FATAL, |
1831 | "you must additionally specify either -M or -MM"); | |
96302433 NB |
1832 | } |
1833 | ||
56cd5b95 NB |
1834 | /* Set up dependency-file output. On exit, if print_deps is non-zero |
1835 | then deps_file is not NULL; stdout is the empty string. */ | |
7ca3d2b1 NB |
1836 | static void |
1837 | init_dependency_output (pfile) | |
1838 | cpp_reader *pfile; | |
1839 | { | |
1840 | char *spec, *s, *output_file; | |
1841 | ||
1842 | /* Either of two environment variables can specify output of deps. | |
1843 | Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET", | |
1844 | where OUTPUT_FILE is the file to write deps info to | |
1845 | and DEPS_TARGET is the target to mention in the deps. */ | |
1846 | ||
1847 | if (CPP_OPTION (pfile, print_deps) == 0) | |
1848 | { | |
1849 | spec = getenv ("DEPENDENCIES_OUTPUT"); | |
1850 | if (spec) | |
1851 | CPP_OPTION (pfile, print_deps) = 1; | |
1852 | else | |
1853 | { | |
1854 | spec = getenv ("SUNPRO_DEPENDENCIES"); | |
1855 | if (spec) | |
1856 | CPP_OPTION (pfile, print_deps) = 2; | |
1857 | else | |
1858 | return; | |
1859 | } | |
1860 | ||
1861 | /* Find the space before the DEPS_TARGET, if there is one. */ | |
1862 | s = strchr (spec, ' '); | |
1863 | if (s) | |
1864 | { | |
1865 | /* Let the caller perform MAKE quoting. */ | |
1866 | deps_add_target (pfile->deps, s + 1, 0); | |
1867 | output_file = (char *) xmalloc (s - spec + 1); | |
1868 | memcpy (output_file, spec, s - spec); | |
1869 | output_file[s - spec] = 0; | |
1870 | } | |
1871 | else | |
1872 | output_file = spec; | |
1873 | ||
ab8e2228 NB |
1874 | /* Command line -MF overrides environment variables and default. */ |
1875 | if (CPP_OPTION (pfile, deps_file) == 0) | |
1876 | CPP_OPTION (pfile, deps_file) = output_file; | |
1877 | ||
7ca3d2b1 NB |
1878 | CPP_OPTION (pfile, print_deps_append) = 1; |
1879 | } | |
ab8e2228 | 1880 | else if (CPP_OPTION (pfile, deps_file) == 0) |
32810ba3 NB |
1881 | /* If -M or -MM was seen without -MF, default output to wherever |
1882 | was specified with -o. out_fname is non-NULL here. */ | |
ab8e2228 | 1883 | CPP_OPTION (pfile, deps_file) = CPP_OPTION (pfile, out_fname); |
7ca3d2b1 NB |
1884 | } |
1885 | ||
5d8ebbd8 | 1886 | /* Handle --help output. */ |
6de1e2a9 ZW |
1887 | static void |
1888 | print_help () | |
1889 | { | |
aaaf7848 | 1890 | /* To keep the lines from getting too long for some compilers, limit |
ec5c56db | 1891 | to about 500 characters (6 lines) per chunk. */ |
6de1e2a9 ZW |
1892 | fputs (_("\ |
1893 | Switches:\n\ | |
1894 | -include <file> Include the contents of <file> before other files\n\ | |
1895 | -imacros <file> Accept definition of macros in <file>\n\ | |
1896 | -iprefix <path> Specify <path> as a prefix for next two options\n\ | |
1897 | -iwithprefix <dir> Add <dir> to the end of the system include path\n\ | |
1898 | -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\ | |
1899 | -isystem <dir> Add <dir> to the start of the system include path\n\ | |
aaaf7848 DT |
1900 | "), stdout); |
1901 | fputs (_("\ | |
6de1e2a9 ZW |
1902 | -idirafter <dir> Add <dir> to the end of the system include path\n\ |
1903 | -I <dir> Add <dir> to the end of the main include path\n\ | |
e23c0ba3 | 1904 | -I- Fine-grained include path control; see info docs\n\ |
6de1e2a9 ZW |
1905 | -nostdinc Do not search system include directories\n\ |
1906 | (dirs specified with -isystem will still be used)\n\ | |
1907 | -nostdinc++ Do not search system include directories for C++\n\ | |
1908 | -o <file> Put output into <file>\n\ | |
aaaf7848 DT |
1909 | "), stdout); |
1910 | fputs (_("\ | |
041c3194 | 1911 | -pedantic Issue all warnings demanded by strict ISO C\n\ |
e23c0ba3 | 1912 | -pedantic-errors Issue -pedantic warnings as errors instead\n\ |
041c3194 | 1913 | -trigraphs Support ISO C trigraphs\n\ |
6de1e2a9 ZW |
1914 | -lang-c Assume that the input sources are in C\n\ |
1915 | -lang-c89 Assume that the input sources are in C89\n\ | |
aaaf7848 DT |
1916 | "), stdout); |
1917 | fputs (_("\ | |
f9a0e96c | 1918 | -lang-c++ Assume that the input sources are in C++\n\ |
6de1e2a9 ZW |
1919 | -lang-objc Assume that the input sources are in ObjectiveC\n\ |
1920 | -lang-objc++ Assume that the input sources are in ObjectiveC++\n\ | |
1921 | -lang-asm Assume that the input sources are in assembler\n\ | |
aaaf7848 DT |
1922 | "), stdout); |
1923 | fputs (_("\ | |
6de1e2a9 | 1924 | -std=<std name> Specify the conformance standard; one of:\n\ |
916269ab UD |
1925 | gnu89, gnu99, c89, c99, iso9899:1990,\n\ |
1926 | iso9899:199409, iso9899:1999\n\ | |
6de1e2a9 ZW |
1927 | -+ Allow parsing of C++ style features\n\ |
1928 | -w Inhibit warning messages\n\ | |
1929 | -Wtrigraphs Warn if trigraphs are encountered\n\ | |
1930 | -Wno-trigraphs Do not warn about trigraphs\n\ | |
1931 | -Wcomment{s} Warn if one comment starts inside another\n\ | |
aaaf7848 DT |
1932 | "), stdout); |
1933 | fputs (_("\ | |
6de1e2a9 | 1934 | -Wno-comment{s} Do not warn about comments\n\ |
f9a0e96c ZW |
1935 | -Wtraditional Warn about features not present in traditional C\n\ |
1936 | -Wno-traditional Do not warn about traditional C\n\ | |
6de1e2a9 ZW |
1937 | -Wundef Warn if an undefined macro is used by #if\n\ |
1938 | -Wno-undef Do not warn about testing undefined macros\n\ | |
1939 | -Wimport Warn about the use of the #import directive\n\ | |
aaaf7848 DT |
1940 | "), stdout); |
1941 | fputs (_("\ | |
6de1e2a9 ZW |
1942 | -Wno-import Do not warn about the use of #import\n\ |
1943 | -Werror Treat all warnings as errors\n\ | |
1944 | -Wno-error Do not treat warnings as errors\n\ | |
317639a8 BC |
1945 | -Wsystem-headers Do not suppress warnings from system headers\n\ |
1946 | -Wno-system-headers Suppress warnings from system headers\n\ | |
6de1e2a9 | 1947 | -Wall Enable all preprocessor warnings\n\ |
aaaf7848 DT |
1948 | "), stdout); |
1949 | fputs (_("\ | |
317639a8 BC |
1950 | -M Generate make dependencies\n\ |
1951 | -MM As -M, but ignore system header files\n\ | |
576786b0 NB |
1952 | -MD Generate make dependencies and compile\n\ |
1953 | -MMD As -MD, but ignore system header files\n\ | |
96302433 | 1954 | -MF <file> Write dependency output to the given file\n\ |
6de1e2a9 | 1955 | -MG Treat missing header file as generated files\n\ |
96302433 NB |
1956 | "), stdout); |
1957 | fputs (_("\ | |
1958 | -MP Generate phony targets for all headers\n\ | |
1959 | -MQ <target> Add a MAKE-quoted target\n\ | |
1960 | -MT <target> Add an unquoted target\n\ | |
aaaf7848 DT |
1961 | "), stdout); |
1962 | fputs (_("\ | |
317639a8 BC |
1963 | -D<macro> Define a <macro> with string '1' as its value\n\ |
1964 | -D<macro>=<val> Define a <macro> with <val> as its value\n\ | |
576786b0 NB |
1965 | -A<question>=<answer> Assert the <answer> to <question>\n\ |
1966 | -A-<question>=<answer> Disable the <answer> to <question>\n\ | |
6de1e2a9 | 1967 | -U<macro> Undefine <macro> \n\ |
6de1e2a9 | 1968 | -v Display the version number\n\ |
aaaf7848 DT |
1969 | "), stdout); |
1970 | fputs (_("\ | |
317639a8 BC |
1971 | -H Print the name of header files as they are used\n\ |
1972 | -C Do not discard comments\n\ | |
6de1e2a9 ZW |
1973 | -dM Display a list of macro definitions active at end\n\ |
1974 | -dD Preserve macro definitions in output\n\ | |
1975 | -dN As -dD except that only the names are preserved\n\ | |
1976 | -dI Include #include directives in the output\n\ | |
317639a8 BC |
1977 | "), stdout); |
1978 | fputs (_("\ | |
3bce8a01 | 1979 | -fpreprocessed Treat the input file as already preprocessed\n\ |
6ab3e7dd | 1980 | -ftabstop=<number> Distance between tab stops for column reporting\n\ |
6de1e2a9 ZW |
1981 | -P Do not generate #line directives\n\ |
1982 | -$ Do not allow '$' in identifiers\n\ | |
576786b0 | 1983 | -remap Remap file names when including files\n\ |
e23c0ba3 | 1984 | --version Display version information\n\ |
6de1e2a9 ZW |
1985 | -h or --help Display this information\n\ |
1986 | "), stdout); | |
1987 | } |